Fait mathématique: 47864 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 47864 is an unremarkable number.
Date historique: January 17th is the day in 1950 that the Great Brinks Robbery – 11 thieves steal more than $2 million from an armored car Company's offices in Boston, Massachusetts.