113609993 has 4 divisors (see below), whose sum is σ = 129840000. Its totient is φ = 97379988.

The previous prime is 113609983. The next prime is 113610001. The reversal of 113609993 is 399906311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113609993 - 2⁸ = 113609737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113609993.

It is not an unprimeable number, because it can be changed into a prime (113609953) 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, 8114993 + ... + 8115006.

It is an arithmetic number, because the mean of its divisors is an integer number (32460000).

Almost surely, 2^113609993 is an apocalyptic number.

It is an amenable number.

113609993 is a deficient number, since it is larger than the sum of its proper divisors (16230007).

113609993 is an equidigital number, since it uses as much as digits as its factorization.

113609993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16230006.

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 113609993 is about 10658.7988535294. The cubic root of 113609993 is about 484.3271826983.

The spelling of 113609993 in words is "one hundred thirteen million, six hundred nine thousand, nine hundred ninety-three".