That’s the question Alex Bellos, a math blogger for The Guardian, set out to answer:
Bellos set up the website http://favouritenumber.net and asked people to cast votes for their favorite numbers and explain why they liked them. More than 44,000 people did. Along the way, Bellos noticed lots of patterns. “Definitely, non-mathematical reasons were more frequent than mathematical ones,” he says. “Dates and birthdays are the most common.” Odd numbers do better, in general, than even ones. In China, 8 is popular because it sounds like “prosperity,” and 4 is unpopular because it sounds like “death.” English has sound-alikes, too: one voter said his favorite was 11, because “it sounds like lovin’.”
Dana Mackenzie counts down the results:
The bronze medal goes to the number 8. Hey, all those Chinese people can’t be wrong!
The silver medal goes to the number 3. That should go over well with fans of the Three Musketeers, the Three Stooges, and the Three Little Pigs.
But the number cited most often as a favorite number is (drum roll, please) …
7.
To be honest, this is hardly a shock. If you go to Las Vegas, you can’t miss the 7’s all around you. “People’s strongest emotional reaction is to the number 7, and this has been true throughout history,” says Bellos. But strangely enough, no one really knows why. “The argument most frequently given, which I think is not credible, is that there are seven visible planets or seven days in the week,” Bellos says. He thinks that we like 7 because it’s the only number between 2 and 10 that is neither a multiple nor a factor of any other. It somehow stands apart from the others.
The Dish 