115071639 has 8 divisors (see below), whose sum is σ = 156323952. Its totient is φ = 75266880.

The previous prime is 115071631. The next prime is 115071647. The reversal of 115071639 is 936170511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (115071631) and next prime (115071647).

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

It is not a de Polignac number, because 115071639 - 2³ = 115071631 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115071631) 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, 361702 + ... + 362019.

It is an arithmetic number, because the mean of its divisors is an integer number (19540494).

Almost surely, 2^115071639 is an apocalyptic number.

115071639 is a deficient number, since it is larger than the sum of its proper divisors (41252313).

115071639 is an equidigital number, since it uses as much as digits as its factorization.

115071639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723777.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 115071639 is about 10727.1449603331. The cubic root of 115071639 is about 486.3953708310.

The spelling of 115071639 in words is "one hundred fifteen million, seventy-one thousand, six hundred thirty-nine".