four hundred ninety-nine
Nowadays 499 in Roman numerals is now considered to be CDXCIX but the ancient Romans would have simply worked it out as ID meaning 500-1 = 499
4,990 = 2 x 5 x 499
In the English language there are 499, technical words not necessarily included
499 is a prime so it is only divisible by 1 and 499.
499-199 is equal to 300.
In accordance with today's rules it is CDXCIX But the Romans themselves in the past probably wrote it out simply as ID (-1+500=499)
499 take away 199; 499-100=399 then; 399-99=300
It means "499 common era", i.e. the year 499 past 0. It's another way of saying "AD 499".
199 - 499 = -300
499 + 1 = 500
499 times 10 is 4,990
499 is a whole number.