Fait mathématique: 2394 is the smallest value of n for which n and 7n together use each digit 1-9 exactly once.
Culture générale: 2394 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: July 21st is the day in 1959 that Elijah Jerry "Pumpsie" Green becomes the first African-American to play for the Boston Red Sox, the last team to integrate.