It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 2199000998 is an apocalyptic number.
199000998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
199000998 is a wasteful number, since it uses less digits than its factorization.
199000998 is an odious number, because the sum of its binary digits is odd.
The square root of 199000998 is about 14106.7713527937. The cubic root of 199000998 is about 583.8282220590.
The spelling of 199000998 in words is "one hundred ninety-nine million, nine hundred ninety-eight", and thus it is an aban number.