199974976 has 14 divisors (see below), whose sum is σ = 396825470. Its totient is φ = 99987456.

The previous prime is 199974947. The next prime is 199974977. The reversal of 199974976 is 679479991.

It can be written as a sum of positive squares in only one way, i.e., 143424576 + 56550400 = 11976^2 + 7520^2 .

It is not an unprimeable number, because it can be changed into a prime (199974977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562241 + ... + 1562368.

Almost surely, 2^199974976 is an apocalyptic number.

199974976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

199974976 is a deficient number, since it is larger than the sum of its proper divisors (196850494).

199974976 is an equidigital number, since it uses as much as digits as its factorization.

199974976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124621 (or 3124611 counting only the distinct ones).

The product of its digits is 7715736, while the sum is 61.

The square root of 199974976 is about 14141.2508640502. The cubic root of 199974976 is about 584.7791564186.

The spelling of 199974976 in words is "one hundred ninety-nine million, nine hundred seventy-four thousand, nine hundred seventy-six".