Fait général: 78840 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 78840 is an uninteresting number.
Culture générale: 78840 is an unremarkable number.
Date historique: November 9th is the day in 694 that Egica, a king of the Visigoths of Hispania, accuses Jews of aiding Muslims, sentencing all Jews to slavery.