General fact: 47845 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 47845 is a boring number.
Trivia: 47845 is a boring number.
Historical date: December 29th is the day in 1835 that the Treaty of New Echota is signed, ceding all the lands of the Cherokee east of the Mississippi River to the United States.