Hecho general: 339 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 339 is the number of ways to divide 5 black and 5 white beads into piles.
Trivia: 339 is an unremarkable number.
Fecha histórica: December 4th is the day in 1918 that U.S. President Woodrow Wilson sails for the World War I peace talks in Versailles, becoming the first US president to travel to Europe while in office.