Fatto matematico: 416 is the number of subsets of the 15^{th} roots of unity that add to a real number.
Trivia: 416 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: February 19th is the day in 1859 that Daniel E. Sickles, a New York Congressman, is acquitted of murder on grounds of temporary insanity.