math_fact: 434 is the smallest composite value of n for which s(n) + 2 = s(n+2).
trivia: 434 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: March 9th is the day in 1957 that a magnitude 8.3 earthquake in the Andreanof Islands, Alaska triggers a Pacific-wide tsunami causing extensive damage to Hawaii and Oahu.