Fatto generale: 2889 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2889 is a number n for which n^{2}+1 is 5 times another square.
Trivia: 2889 is an unremarkable number.
Data storica: November 28th is the day in 1971 that Wasfi al-Tal, Prime Minister of Jordan, is assassinated by the Black September unit of the Palestine Liberation Organization.