Hecho matemático: 4436 is the number of ways to place 4 non-attacking knights on a 5×5 chessboard.
Trivia: 4436 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: February 22nd is the day in 1994 that Aldrich Ames and his wife are charged by the United States Department of Justice with spying for the Soviet Union.