115664439 has 16 divisors (see below), whose sum is σ = 168626304. Its totient is φ = 69938400.

The previous prime is 115664431. The next prime is 115664459. The reversal of 115664439 is 934466511.

It is not a de Polignac number, because 115664439 - 2³ = 115664431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115664397 and 115664406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115664431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11412 + ... + 19014.

It is an arithmetic number, because the mean of its divisors is an integer number (10539144).

Almost surely, 2^115664439 is an apocalyptic number.

115664439 is a deficient number, since it is larger than the sum of its proper divisors (52961865).

115664439 is a wasteful number, since it uses less digits than its factorization.

115664439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8078.

The product of its digits is 77760, while the sum is 39.

The square root of 115664439 is about 10754.7403036986. The cubic root of 115664439 is about 487.2291744914.

The spelling of 115664439 in words is "one hundred fifteen million, six hundred sixty-four thousand, four hundred thirty-nine".