Fatto generale: 4906 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4906 is an uninteresting number.
Trivia: 4906 is an unremarkable number.
Data storica: June 6th is the day in 1894 that Governor Davis H. Waite orders the Colorado state militia to protect and support the miners engaged in the Cripple Creek miners' strike.