general_fact: 9805 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 9805 is the number of subsequences of {1,2,3,...15} in which every odd number has an even neighbor.
trivia: 9805 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: November 4th is the day in 1852 that Count Camillo Benso di Cavour becomes the prime minister of Piedmont-Sardinia, which soon expands to become Italy.