Quotation

Number Freak

From 1 to 200, the Hidden Language of Numbers Revealed
4 is the only number in the English Language that contains the same number of letters as its name. But there's more going on here. Choose any number whatsoever and count the number of letters in its name to get a new number. Count the number of letters in the new number, and keep going. No matter what number you started with, you'll eventually end up with four. The proof is actually a little easier than you might think. Care to take a stab at it?