Fait mathématique: 7189 is the number of ways to color the vertices of a square with 13 colors, up to rotation.
Culture générale: 7189 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 6th is the day in 1949 that Allied military authorities relinquish control of former Nazi Germany assets back to German control.