Fait mathématique: 2890 is the smallest number in base 9 whose square contains the same digits in the same proportion.
Culture générale: 2890 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: November 29th is the day in 1394 that the Korean king Yi Seong-gye, founder of the Joseon Dynasty, moves the capital from Kaesŏng to Hanyang, today known as Seoul.