113199979 has 2 divisors, whose sum is σ = 113199980. Its totient is φ = 113199978.

The previous prime is 113199971. The next prime is 113200013. The reversal of 113199979 is 979991311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113199979 - 2³ = 113199971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (113199971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56599989 + 56599990.

It is an arithmetic number, because the mean of its divisors is an integer number (56599990).

Almost surely, 2^113199979 is an apocalyptic number.

113199979 is a deficient number, since it is larger than the sum of its proper divisors (1).

113199979 is an equidigital number, since it uses as much as digits as its factorization.

113199979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137781, while the sum is 49.

The square root of 113199979 is about 10639.5478757323. The cubic root of 113199979 is about 483.7438411259.

The spelling of 113199979 in words is "one hundred thirteen million, one hundred ninety-nine thousand, nine hundred seventy-nine".