Fait général: 4086 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4086 is a permutation of the sum of its proper divisors.
Culture générale: 4086 is an uninteresting number.
Date historique: March 9th is the day in 1566 that David Rizzio, private secretary to Mary, Queen of Scots, is murdered in the Palace of Holyroodhouse, Edinburgh, Scotland.