115390971 has 24 divisors (see below), whose sum is σ = 181506000. Its totient is φ = 70362432.

The previous prime is 115390943. The next prime is 115390981. The reversal of 115390971 is 179093511.

It is not a de Polignac number, because 115390971 - 2¹⁰ = 115389947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115390921) 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 23 ways as a sum of consecutive naturals, for example, 6676 + ... + 16593.

It is an arithmetic number, because the mean of its divisors is an integer number (7562750).

Almost surely, 2^115390971 is an apocalyptic number.

115390971 is a deficient number, since it is larger than the sum of its proper divisors (66115029).

115390971 is a wasteful number, since it uses less digits than its factorization.

115390971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23323 (or 23320 counting only the distinct ones).

The product of its (nonzero) digits is 8505, while the sum is 36.

The square root of 115390971 is about 10742.0189443140. The cubic root of 115390971 is about 486.8448825521.

The spelling of 115390971 in words is "one hundred fifteen million, three hundred ninety thousand, nine hundred seventy-one".