Fait général: 4087 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4087 is the product of two consecutive primes.
Culture générale: 4087 is an uninteresting number.
Date historique: March 10th is the day in 1848 that the Treaty of Guadalupe Hidalgo is ratified by the United States Senate, ending the Mexican-American War.