Fatto generale: 2084 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2084 is a boring number.
Trivia: 2084 is an uninteresting number.
Data storica: September 14th is the day in 1752 that the British Empire adopts the Gregorian calendar, skipping eleven days (the previous day was September 2).