Fait mathématique: 7039 is 28156 / 4, and each digit is contained in the equation exactly once.
Culture générale: 7039 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: April 9th is the day in 1992 that a U.S. Federal Court finds former Panamanian dictator Manuel Noriega guilty of drug and racketeering charges.