Fait général: 47091 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 47091 is an unremarkable number.
Culture générale: 47091 is an uninteresting number.
Date historique: December 5th is the day in 2005 that the Lake Tanganyika earthquake causes significant damage, mostly in the Democratic Republic of the Congo.