Fatto matematico: 1779 is the smallest number whose 4^{th} power has 13 digits.
Trivia: 1779 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: November 13th is the day in 1841 that James Braid first sees a demonstration of animal magnetism, which leads to his study of the subject he eventually calls hypnotism.