199979056 has 10 divisors (see below), whose sum is σ = 387459452. Its totient is φ = 99989520.

The previous prime is 199979053. The next prime is 199979057. The reversal of 199979056 is 650979991.

199979056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×199979056² = 79983245677302272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199978988 and 199979006.

It is not an unprimeable number, because it can be changed into a prime (199979051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6249330 + ... + 6249361.

Almost surely, 2^199979056 is an apocalyptic number.

199979056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

199979056 is a deficient number, since it is larger than the sum of its proper divisors (187480396).

199979056 is a wasteful number, since it uses less digits than its factorization.

199979056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12498699 (or 12498693 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 55.

The square root of 199979056 is about 14141.3951221229. The cubic root of 199979056 is about 584.7831333875.

The spelling of 199979056 in words is "one hundred ninety-nine million, nine hundred seventy-nine thousand, fifty-six".