Fatto matematico: 2089 is the smallest number that ends an arithmetic progression of 10 numbers with the same prime signature.
Trivia: 2089 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 19th is the day in 1971 that Montagnard troops of South Vietnam revolt against the rule of Nguyen Khanh, killing 70 ethnic Vietnamese soldiers.