115939 has 4 divisors (see below), whose sum is σ = 116640. Its totient is φ = 115240.

The previous prime is 115933. The next prime is 115963. The reversal of 115939 is 939511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 115939 - 2³ = 115931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115931) 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, 54 + ... + 484.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2¹¹⁵⁹³⁹ is an apocalyptic number.

115939 is a deficient number, since it is larger than the sum of its proper divisors (701).

115939 is an equidigital number, since it uses as much as digits as its factorization.

115939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its digits is 1215, while the sum is 28.

The square root of 115939 is about 340.4981644591. The cubic root of 115939 is about 48.7614393493.

The spelling of 115939 in words is "one hundred fifteen thousand, nine hundred thirty-nine".