115972905 has 8 divisors (see below), whose sum is σ = 185556672. Its totient is φ = 61852208.

The previous prime is 115972897. The next prime is 115972907. The reversal of 115972905 is 509279511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115972905 - 2³ = 115972897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115972907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3865749 + ... + 3865778.

It is an arithmetic number, because the mean of its divisors is an integer number (23194584).

Almost surely, 2^115972905 is an apocalyptic number.

115972905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115972905 is a deficient number, since it is larger than the sum of its proper divisors (69583767).

115972905 is an equidigital number, since it uses as much as digits as its factorization.

115972905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731535.

The product of its (nonzero) digits is 28350, while the sum is 39.

The square root of 115972905 is about 10769.0716870118. The cubic root of 115972905 is about 487.6619212290.

The spelling of 115972905 in words is "one hundred fifteen million, nine hundred seventy-two thousand, nine hundred five".