113940091 has 4 divisors (see below), whose sum is σ = 118894032. Its totient is φ = 108986152.

The previous prime is 113940083. The next prime is 113940119. The reversal of 113940091 is 190049311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113940091 - 2³ = 113940083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113940031) 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, 2476936 + ... + 2476981.

It is an arithmetic number, because the mean of its divisors is an integer number (29723508).

Almost surely, 2^113940091 is an apocalyptic number.

113940091 is a deficient number, since it is larger than the sum of its proper divisors (4953941).

113940091 is an equidigital number, since it uses as much as digits as its factorization.

113940091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953940.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 113940091 is about 10674.2723873808. The cubic root of 113940091 is about 484.7958059191.

The spelling of 113940091 in words is "one hundred thirteen million, nine hundred forty thousand, ninety-one".