113405979 has 8 divisors (see below), whose sum is σ = 156422160. Its totient is φ = 72996896.

The previous prime is 113405977. The next prime is 113406017. The reversal of 113405979 is 979504311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113405979 - 2¹ = 113405977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113405977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651672 + ... + 651845.

It is an arithmetic number, because the mean of its divisors is an integer number (19552770).

Almost surely, 2^113405979 is an apocalyptic number.

113405979 is a deficient number, since it is larger than the sum of its proper divisors (43016181).

113405979 is a wasteful number, since it uses less digits than its factorization.

113405979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303549.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 113405979 is about 10649.2243379506. The cubic root of 113405979 is about 484.0371004391.

The spelling of 113405979 in words is "one hundred thirteen million, four hundred five thousand, nine hundred seventy-nine".