general_fact: 87893 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 87893 is an unremarkable number.
trivia: 87893 is an uninteresting number.
historical_date: August 22nd is the day in 2006 that Pulkovo Aviation Enterprise Flight 612 crashes near the Russian border over eastern Ukraine, killing all 170 people on board.