Fait mathématique: 1446 is the number of graphs with 9 vertices and 5 edges.
Culture générale: 1446 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: December 16th is the day in 1947 that William Shockley, John Bardeen and Walter Brattain build the first practical point-contact transistor.