general_fact: 43992 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 43992 is a boring number.
trivia: 43992 is an unremarkable number.
historical_date: June 11th is the day in 1935 that Inventor Edwin Armstrong gives the first public demonstration of FM broadcasting in the United States at Alpine, New Jersey.