115239247 has 4 divisors (see below), whose sum is σ = 116534160. Its totient is φ = 113944336.

The previous prime is 115239239. The next prime is 115239323. The reversal of 115239247 is 742932511.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 115239247 - 2³ = 115239239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115239217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647323 + ... + 647500.

It is an arithmetic number, because the mean of its divisors is an integer number (29133540).

Almost surely, 2^115239247 is an apocalyptic number.

115239247 is a deficient number, since it is larger than the sum of its proper divisors (1294913).

115239247 is an equidigital number, since it uses as much as digits as its factorization.

115239247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294912.

The product of its digits is 15120, while the sum is 34.

The square root of 115239247 is about 10734.9544479704. The cubic root of 115239247 is about 486.6314098956.

The spelling of 115239247 in words is "one hundred fifteen million, two hundred thirty-nine thousand, two hundred forty-seven".