General fact: 8492 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 8492 is the number of arrangements of 5 non-attacking queens on a 11×5 chessboard.
Trivia: 8492 is a boring number.
Historical date: April 1st is the day in 1939 that Generalísimo Francisco Franco of the Spanish State announces the end of the Spanish Civil War, when the last of the Republican forces surrender.