Hecho general: 1397 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 1397 is an uninteresting number.
Trivia: 1397 is an uninteresting number.
Fecha histórica: October 28th is the day in 1835 that the United Tribes of New Zealand is established with the signature of the Declaration of Independence.