Hecho general: 9047 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 9047 is a boring number.
Trivia: 9047 is an uninteresting number.
Fecha histórica: October 7th is the day in 1477 that Uppsala University is inaugurated after receiving its corporate rights from Pope Sixtus IV in February the same year.