115047639 has 18 divisors (see below), whose sum is σ = 193312080. Its totient is φ = 65741256.

The previous prime is 115047631. The next prime is 115047677. The reversal of 115047639 is 936740511.

115047639 is a `hidden beast` number, since 1 + 15 + 0 + 4 + 7 + 639 = 666.

It is not a de Polignac number, because 115047639 - 2³ = 115047631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115047631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 129999 + ... + 130880.

It is an arithmetic number, because the mean of its divisors is an integer number (10739560).

Almost surely, 2^115047639 is an apocalyptic number.

115047639 is a deficient number, since it is larger than the sum of its proper divisors (78264441).

115047639 is a wasteful number, since it uses less digits than its factorization.

115047639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260899 (or 260889 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 115047639 is about 10726.0262446071. The cubic root of 115047639 is about 486.3615533452.

The spelling of 115047639 in words is "one hundred fifteen million, forty-seven thousand, six hundred thirty-nine".