Fait général: 10809 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 10809 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 10809 is an uninteresting number.
Date historique: August 4th is the day in 1693 that Date traditionally ascribed to Dom Perignon's invention of Champagne, although he actually did not have anything to do with sparkling wine.