199699904 has 14 divisors (see below), whose sum is σ = 396279624. Its totient is φ = 99849920.

The previous prime is 199699897. The next prime is 199699931. The reversal of 199699904 is 409996991.

It is a self number, because there is not a number n which added to its sum of digits gives 199699904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560092 + ... + 1560219.

Almost surely, 2^199699904 is an apocalyptic number.

It is an amenable number.

199699904 is a deficient number, since it is larger than the sum of its proper divisors (196579720).

199699904 is an equidigital number, since it uses as much as digits as its factorization.

199699904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120323 (or 3120313 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 56.

The square root of 199699904 is about 14131.5216448902. The cubic root of 199699904 is about 584.5109058836.

The spelling of 199699904 in words is "one hundred ninety-nine million, six hundred ninety-nine thousand, nine hundred four".