Fait mathématique: 4006 is _{14}C_{4} + _{14}C_{0} + _{14}C_{0} + _{14}C_{6}.
Culture générale: 4006 is an uninteresting number.
Date historique: December 19th is the day in 1986 that Mikhail Gorbachev, leader of the Soviet Union, releases Andrei Sakharov and his wife from exile in Gorky.