115388906 has 4 divisors (see below), whose sum is σ = 173083362. Its totient is φ = 57694452.

The previous prime is 115388899. The next prime is 115388939. The reversal of 115388906 is 609883511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60762025 + 54626881 = 7795^2 + 7391^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28847225 + ... + 28847228.

Almost surely, 2^115388906 is an apocalyptic number.

115388906 is a deficient number, since it is larger than the sum of its proper divisors (57694456).

115388906 is an equidigital number, since it uses as much as digits as its factorization.

115388906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57694455.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 115388906 is about 10741.9228260121. The cubic root of 115388906 is about 486.8419783945.

The spelling of 115388906 in words is "one hundred fifteen million, three hundred eighty-eight thousand, nine hundred six".