Hecho general: 7447 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 7447 is a palindrome in base 2 and in base 10.
Trivia: 7447 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: May 21st is the day in 1996 that the Trappist Martyrs of Atlas, kidnapped during the Algerian Civil War and held for two months, are found dead.