117865439 has 8 divisors (see below), whose sum is σ = 118654848. Its totient is φ = 117079200.

The previous prime is 117865411. The next prime is 117865453. The reversal of 117865439 is 934568711.

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 117865439 - 2¹² = 117861343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117865439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117865499) 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, 167789 + ... + 168489.

It is an arithmetic number, because the mean of its divisors is an integer number (14831856).

Almost surely, 2^117865439 is an apocalyptic number.

117865439 is a deficient number, since it is larger than the sum of its proper divisors (789409).

117865439 is an equidigital number, since it uses as much as digits as its factorization.

117865439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its digits is 181440, while the sum is 44.

The square root of 117865439 is about 10856.5850524002. The cubic root of 117865439 is about 490.3003004412.

The spelling of 117865439 in words is "one hundred seventeen million, eight hundred sixty-five thousand, four hundred thirty-nine".