General fact: 47847 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 47847 is an uninteresting number.
Trivia: 47847 is an unremarkable number.
Historical date: December 31st is the day in 1992 that Czechoslovakia is peacefully dissolved in what is dubbed by media as the Velvet Divorce, resulting in the creation of the Czech Republic and Slovakia.