113401979 has 2 divisors, whose sum is σ = 113401980. Its totient is φ = 113401978.

The previous prime is 113401961. The next prime is 113401991. The reversal of 113401979 is 979104311.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (979104311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113401979 - 2⁸ = 113401723 is a prime.

It is a super-2 number, since 2×113401979² = 25720017682232882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113401909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56700989 + 56700990.

It is an arithmetic number, because the mean of its divisors is an integer number (56700990).

Almost surely, 2^113401979 is an apocalyptic number.

113401979 is a deficient number, since it is larger than the sum of its proper divisors (1).

113401979 is an equidigital number, since it uses as much as digits as its factorization.

113401979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 113401979 is about 10649.0365291889. The cubic root of 113401979 is about 484.0314094658.

The spelling of 113401979 in words is "one hundred thirteen million, four hundred one thousand, nine hundred seventy-nine".