general_fact: 2390 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 2390 is a boring number.
trivia: 2390 is an unremarkable number.
historical_date: July 17th is the day in 1938 that Douglas Corrigan takes off from Brooklyn to fly the "wrong way" to Ireland and becomes known as "Wrong Way" Corrigan.