general_fact: 8397 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 8397 is the largest known composite number n so that _{3n}C_{n} = 3^{n} (mod n).
trivia: 8397 is an uninteresting number.
historical_date: December 27th is the day in 1945 that the World Bank and International Monetary Fund are created with the signing of an agreement by 29 nations.