Fait général: 11809 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 11809 is an unremarkable number.
Culture générale: 11809 is a boring number.
Date historique: April 30th is the day in 1900 that Casey Jones dies in a train wreck in Vaughn, Mississippi, while trying to make up time on the Cannonball Express.