Fait général: 23749 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 23749 is an unremarkable number.
Culture générale: 23749 is a boring number.
Date historique: January 7th is the day in 1919 that Montenegrin guerrilla fighters rebel against the planned annexation of Montenegro by Serbia, but fail.