113389979 has 2 divisors, whose sum is σ = 113389980. Its totient is φ = 113389978.

The previous prime is 113389921. The next prime is 113389981. The reversal of 113389979 is 979983311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113389979 - 2²⁰ = 112341403 is a prime.

Together with 113389981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (113389279) 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, 56694989 + 56694990.

It is an arithmetic number, because the mean of its divisors is an integer number (56694990).

Almost surely, 2^113389979 is an apocalyptic number.

113389979 is a deficient number, since it is larger than the sum of its proper divisors (1).

113389979 is an equidigital number, since it uses as much as digits as its factorization.

113389979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 50.

The square root of 113389979 is about 10648.4730830293. The cubic root of 113389979 is about 484.0143357432.

The spelling of 113389979 in words is "one hundred thirteen million, three hundred eighty-nine thousand, nine hundred seventy-nine".