general_fact: 869 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 869 is the number of different resistances that can be created in a circuit of 9 equal resistors.
trivia: 869 is an uninteresting number.
historical_date: May 18th is the day in 1896 that the United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.