115926921 has 12 divisors (see below), whose sum is σ = 182672880. Its totient is φ = 70258680.

The previous prime is 115926911. The next prime is 115926929. The reversal of 115926921 is 129629511.

115926921 is a `hidden beast` number, since 1 + 1 + 592 + 69 + 2 + 1 = 666.

It is not a de Polignac number, because 115926921 - 2⁷ = 115926793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115926929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 585391 + ... + 585588.

It is an arithmetic number, because the mean of its divisors is an integer number (15222740).

Almost surely, 2^115926921 is an apocalyptic number.

115926921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115926921 is a deficient number, since it is larger than the sum of its proper divisors (66745959).

115926921 is a wasteful number, since it uses less digits than its factorization.

115926921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170996 (or 1170993 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 115926921 is about 10766.9364723676. The cubic root of 115926921 is about 487.5974590161.

The spelling of 115926921 in words is "one hundred fifteen million, nine hundred twenty-six thousand, nine hundred twenty-one".