Cursed Numbers Across Cultures: Why Some Numbers Still Give Us the Creeps

Some things just seem to come preloaded with bad vibes—and weirdly, numbers are one of them. I’m not talking about the ones in your bank account (though, sure, those can be scary too) or the digits blinking back at you from the scale after vacation. I mean actual numbers. Harmless-looking symbols that somehow carry centuries of suspicion, dread, and terror, supposed cursed numbers across cultures.

Across the world, seemingly innocent numbers have been blamed for everything from death and disease to bad luck, misfortune, demonic influence, and ghostly encounters. Entire skyscrapers skip entire floors. Airlines dodge seat rows. Families avoid buying houses with certain digits in the address. Superstitions like these don’t stick around for thousands of years by accident.

So… why do certain numbers still creep us out, even in our high-tech, hyper-rational, data-driven age? Why do we still get twitchy about calendars, door numbers, or receipts that just look wrong? Let’s dive headfirst into some of the world’s most famously cursed numbers.

13: The OG Bad Luck Number

Let’s just start with the heavyweight champion of cursed numbers: 13. If there were a Hall of Fame for unlucky digits, this one would be first ballot, no questions asked.

In the West, 13 has become the archetype of bad luck. The moment someone mentions it, most of us immediately think of Friday the 13th—either the superstition or the slasher film franchise (which honestly didn’t help the number’s reputation). Hotels skip the 13th floor. High-rises quietly go from floor 12 to 14. Some apartment buildings don’t have a unit 13. Even airplanes sometimes avoid Row 13 altogether. But the real question is: why is 13 cursed in the first place?

Some blame Norse mythology. According to one legend, 12 gods were enjoying a lovely little dinner party in Valhalla when Loki—the trickster god of mischief—showed up uninvited as the 13th guest. Loki being Loki, things went sideways fast, and Balder, the god of joy and light, ended up dead. The message? Bad things happen when 13 shows up where it’s not welcome.

Then there’s the Christian version: the Last Supper. Jesus and his 12 disciples shared one final meal before he was betrayed by Judas—who, you guessed it, was the 13th to arrive. The very next day, Jesus was crucified. You don’t need to be religious to understand how that association would leave a lasting mark.

4: The Death Number in East Asia

If 13 rules in the West, 4 is the number that sends shivers through East Asia—especially in China, Japan, and Korea. And the reason is actually kind of genius: it’s all in the sound.

In Mandarin, the word for “four” (sì) sounds almost identical to the word for “death” (sǐ). The same phonetic overlap exists in Japanese (shi) and Korean (sa). So every time the number 4 comes up, it carries a little whisper of death along with it. It’s like linguistic jump-scare ASMR.

The result? Extreme tetraphobia (that’s the official term for fear of the number four). Hospitals skip room numbers that end in 4. High-rises go straight from the 3rd floor to the 5th. In some parts of China, phone numbers and license plates that contain the digit 4 are cheaper—because nobody wants them. It’s real-estate poison.

And unlike some Western superstitions, this one isn’t dying out. If anything, it’s evolving. Modern apartment developers in Hong Kong or Seoul are known to deliberately design around the number four to avoid scaring off buyers. In Japan, maternity wards often avoid both 4 and 9 (we’ll get to 9 in a minute), because who wants their newborn associated with death and suffering?

17: Italy’s Quietly Cursed Number

In Italy, 17 is the number that gets the side-eye. Not 13. That one’s spooky too, but it’s kind of like watching an imported horror movie—you get it, but it’s not yours. For Italians, the number 17 has long been considered a harbinger of death and bad fortune. So where did the fear of 17 come from?

Well, the spooky part starts with Roman numerals: XVII. If you rearrange those letters, you get VIXI—a Latin word meaning “I have lived.” That might sound like something you’d say after a particularly good vacation, but in ancient Rome, vixi was code for “I’m dead now.” It was carved on tombstones as a final message from the dearly departed.

So yeah… not exactly a cheerful association. And because Italians are extremely tuned in to the poetry of language and symbolism, 17 became a cultural no-go. Some Italian airlines skip row 17 entirely, and older buildings may hopscotch over it when labeling floors or rooms. Even cars have historically avoided license plates with the number 17.

666: The Devil’s Favorite Digits

This one basically writes itself. Even if you’ve never cracked open a Bible, you’ve probably heard of 666—aka “the number of the beast.” Straight from the Book of Revelation, this infamous trio has become the unofficial numeric mascot of evil, doom, and general satanic panic.

It’s got its own phobia too: hexakosioihexekontahexaphobia. (Honestly sounds more like a demon’s name than a diagnosis.)

Over the centuries, 666 has gone from a cryptic warning in ancient scripture to a full-blown cultural red flag. People won’t sit in seat 666. They won’t stay in hotel room 666. Grocery bills that total $6.66 mysteriously get rounded up with a last-minute pack of gum. Even Ronald Reagan had his address changed from 666 St. Cloud Road to 668 after retiring, just to avoid the association.

And it’s not just religious folks who flinch. In the age of internet paranoia and conspiracy theories, 666 has been attached to everything from barcodes to cryptocurrency to the microchips in credit cards. The fact that it’s been immortalized in everything from horror films to heavy metal albums only amplifies the unease.