115439917 has 4 divisors (see below), whose sum is σ = 116270560. Its totient is φ = 114609276.

The previous prime is 115439893. The next prime is 115439927. The reversal of 115439917 is 719934511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115439917 - 2⁷ = 115439789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115439917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115439927) 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, 415113 + ... + 415390.

It is an arithmetic number, because the mean of its divisors is an integer number (29067640).

Almost surely, 2^115439917 is an apocalyptic number.

It is an amenable number.

115439917 is a deficient number, since it is larger than the sum of its proper divisors (830643).

115439917 is an equidigital number, since it uses as much as digits as its factorization.

115439917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830642.

The product of its digits is 34020, while the sum is 40.

The square root of 115439917 is about 10744.2969523371. The cubic root of 115439917 is about 486.9137086800.

The spelling of 115439917 in words is "one hundred fifteen million, four hundred thirty-nine thousand, nine hundred seventeen".