113638879 has 2 divisors, whose sum is σ = 113638880. Its totient is φ = 113638878.

The previous prime is 113638853. The next prime is 113638891. The reversal of 113638879 is 978836311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113638879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113638079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56819439 + 56819440.

It is an arithmetic number, because the mean of its divisors is an integer number (56819440).

Almost surely, 2^113638879 is an apocalyptic number.

113638879 is a deficient number, since it is larger than the sum of its proper divisors (1).

113638879 is an equidigital number, since it uses as much as digits as its factorization.

113638879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 113638879 is about 10660.1537981401. The cubic root of 113638879 is about 484.3682268855.

The spelling of 113638879 in words is "one hundred thirteen million, six hundred thirty-eight thousand, eight hundred seventy-nine".