Fatto generale: 2709 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2709 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 2709 is an uninteresting number.
Data storica: June 1st is the day in 1794 that the battle of the Glorious First of June is fought, the first naval engagement between Britain and France during the French Revolutionary Wars.