general_fact: 89013 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 89013 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 89013 is an uninteresting number.
historical_date: September 16th is the day in 1701 that James Francis Edward Stuart, sometimes called the "Old Pretender", becomes the Jacobite claimant to the thrones of England and Scotland.