general_fact: 6479 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 6479 is a value of n for which n and 8n together use each digit 1-9 exactly once.
trivia: 6479 is an unremarkable number.
historical_date: September 26th is the day in 1914 that the United States Federal Trade Commission (FTC) is established by the Federal Trade Commission Act.