Fatto generale: 4986 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4986 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 4986 is an uninteresting number.
Data storica: August 25th is the day in 1894 that Kitasato Shibasaburō discovers the infectious agent of the bubonic plague and publishes his findings in The Lancet.