116138879 has 4 divisors (see below), whose sum is σ = 116810376. Its totient is φ = 115467384.

The previous prime is 116138863. The next prime is 116138899. The reversal of 116138879 is 978831611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978831611 = 571 ⋅1714241.

It is a cyclic number.

It is not a de Polignac number, because 116138879 - 2⁴ = 116138863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116138899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335489 + ... + 335834.

It is an arithmetic number, because the mean of its divisors is an integer number (29202594).

Almost surely, 2^116138879 is an apocalyptic number.

116138879 is a deficient number, since it is larger than the sum of its proper divisors (671497).

116138879 is an equidigital number, since it uses as much as digits as its factorization.

116138879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671496.

The product of its digits is 72576, while the sum is 44.

The square root of 116138879 is about 10776.7749814126. The cubic root of 116138879 is about 487.8944485838.

The spelling of 116138879 in words is "one hundred sixteen million, one hundred thirty-eight thousand, eight hundred seventy-nine".