199804992 has 28 divisors (see below), whose sum is σ = 528651216. Its totient is φ = 66601600.

The previous prime is 199804981. The next prime is 199804993. The reversal of 199804992 is 299408991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (199804993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520134 + ... + 520517.

Almost surely, 2^199804992 is an apocalyptic number.

199804992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

199804992 is an abundant number, since it is smaller than the sum of its proper divisors (328846224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199804992 is a wasteful number, since it uses less digits than its factorization.

199804992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040666 (or 1040656 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 51.

The square root of 199804992 is about 14135.2393683305. The cubic root of 199804992 is about 584.6134168838.

The spelling of 199804992 in words is "one hundred ninety-nine million, eight hundred four thousand, nine hundred ninety-two".