Today is September, 9, 2009 or 9/9/09 which, if it weren't for that irritating little zero, would be 9/9/9, and thereby would have been an important coincidence and trivia fact of some note. Nothing like this has happened since August 8, last year. Here are some amazing facts about the number nine to fool your friends with. 9 is the largest single digit number in the decimal system. 9 is the smallest odd number that isn't a prime, except for 1 and all the negative odd numbers. 9 is the smallest odd square integer, except for 1. 9 is 6 upside down, which means that 9/9/09 upside down is 60/6/6, somewhat like the number of the beast. 9 is the number of planets if you count Pluto. 9 times 9 is 81, and 8 plus 1 is 9. 9 is the number of the best cloud. 9 is the official integer of the Beatles White album. 9 is the number of fun facts if you count this one. Life would be dull indeed without this seemingly mundane, yet odd, integer.