Fatto generale: 4427 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4427 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 4427 is a boring number.
Data storica: February 13th is the day in 1984 that Konstantin Chernenko succeeds the late Yuri Andropov as general secretary of the Communist Party of the Soviet Union.