Fait général: 28439 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 28439 is an uninteresting number.
Culture générale: 28439 is a boring number.
Date historique: November 10th is the day in 1975 that the 729-foot-long freighter SS Edmund Fitzgerald sinks during a storm on Lake Superior, killing all 29 crew on board.