113585993 has 4 divisors (see below), whose sum is σ = 120267540. Its totient is φ = 106904448.

The previous prime is 113585987. The next prime is 113585999. The reversal of 113585993 is 399585311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399585311 = 37 ⋅10799603.

It is an interprime number because it is at equal distance from previous prime (113585987) and next prime (113585999).

It can be written as a sum of positive squares in 2 ways, for example, as 95199049 + 18386944 = 9757^2 + 4288^2 .

It is a cyclic number.

It is not a de Polignac number, because 113585993 - 2⁶ = 113585929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113585999) 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, 3340748 + ... + 3340781.

It is an arithmetic number, because the mean of its divisors is an integer number (30066885).

Almost surely, 2^113585993 is an apocalyptic number.

It is an amenable number.

113585993 is a deficient number, since it is larger than the sum of its proper divisors (6681547).

113585993 is an equidigital number, since it uses as much as digits as its factorization.

113585993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681546.

The product of its digits is 145800, while the sum is 44.

The square root of 113585993 is about 10657.6729636445. The cubic root of 113585993 is about 484.2930757485.

The spelling of 113585993 in words is "one hundred thirteen million, five hundred eighty-five thousand, nine hundred ninety-three".