Fatto generale: 4398 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4398 is the number of subsets of {1, 2, 3, ... 18} that do not contain solutions to x + y = z.
Trivia: 4398 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: January 15th is the day in 1991 that the United Nations deadline for the withdrawal of Iraqi forces from occupied Kuwait expires, preparing the way for the start of Operation Desert Storm.