Fatto matematico: 4098 is the number of subsets of the 26^{th} roots of unity that add to 1.
Trivia: 4098 is an unremarkable number.
Data storica: March 21st is the day in 1935 that Shah Reza Pahlavi formally asks the international community to call Persia by its native name, Iran, which means 'Land of the Aryans.