113993891 has 8 divisors (see below), whose sum is σ = 131672304. Its totient is φ = 97534720.

The previous prime is 113993879. The next prime is 113993923. The reversal of 113993891 is 198399311.

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 113993891 - 2⁶ = 113993827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113993801) 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, 304610 + ... + 304983.

It is an arithmetic number, because the mean of its divisors is an integer number (16459038).

Almost surely, 2^113993891 is an apocalyptic number.

113993891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113993891 is a deficient number, since it is larger than the sum of its proper divisors (17678413).

113993891 is a wasteful number, since it uses less digits than its factorization.

113993891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609621.

The product of its digits is 52488, while the sum is 44.

The square root of 113993891 is about 10676.7921680625. The cubic root of 113993891 is about 484.8720972113.

The spelling of 113993891 in words is "one hundred thirteen million, nine hundred ninety-three thousand, eight hundred ninety-one".