general_fact: 47039 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 47039 is a boring number.
trivia: 47039 is an unremarkable number.
historical_date: October 14th is the day in 1910 that the English aviator Claude Grahame-White lands his Farman Aircraft biplane on Executive Avenue near the White House in Washington, D.C..