general_fact: 84856 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 84856 is an unremarkable number.
trivia: 84856 is a boring number.
historical_date: April 29th is the day in 1864 that Theta Xi fraternity is founded at Rensselaer Polytechnic Institute, the only fraternity to be founded during the Civil War.