113615779 has 4 divisors (see below), whose sum is σ = 116033184. Its totient is φ = 111198376.

The previous prime is 113615773. The next prime is 113615783. The reversal of 113615779 is 977516311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977516311 = 29 ⋅33707459.

It is a cyclic number.

It is not a de Polignac number, because 113615779 - 2¹⁹ = 113091491 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113615773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208632 + ... + 1208725.

It is an arithmetic number, because the mean of its divisors is an integer number (29008296).

Almost surely, 2^113615779 is an apocalyptic number.

113615779 is a deficient number, since it is larger than the sum of its proper divisors (2417405).

113615779 is an equidigital number, since it uses as much as digits as its factorization.

113615779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417404.

The product of its digits is 39690, while the sum is 40.

The square root of 113615779 is about 10659.0702690244. The cubic root of 113615779 is about 484.3354045969.

The spelling of 113615779 in words is "one hundred thirteen million, six hundred fifteen thousand, seven hundred seventy-nine".