Fatto generale: 8464 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 8464 is the number of different products of subsets of the set {1, 2, 3, ... 17}.
Trivia: 8464 is a boring number.
Data storica: March 4th is the day in 1980 that Nationalist leader Robert Mugabe wins a sweeping election victory to become Zimbabwe's first black prime minister.