115139649 has 8 divisors (see below), whose sum is σ = 153601632. Its totient is φ = 76718720.

The previous prime is 115139641. The next prime is 115139659. The reversal of 115139649 is 946931511.

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 115139649 - 2³ = 115139641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115139641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2979 + ... + 15464.

It is an arithmetic number, because the mean of its divisors is an integer number (19200204).

Almost surely, 2^115139649 is an apocalyptic number.

It is an amenable number.

115139649 is a deficient number, since it is larger than the sum of its proper divisors (38461983).

115139649 is a wasteful number, since it uses less digits than its factorization.

115139649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20527.

The product of its digits is 29160, while the sum is 39.

The square root of 115139649 is about 10730.3144874696. The cubic root of 115139649 is about 486.4911755970.

The spelling of 115139649 in words is "one hundred fifteen million, one hundred thirty-nine thousand, six hundred forty-nine".