116665239 has 4 divisors (see below), whose sum is σ = 155553656. Its totient is φ = 77776824.

The previous prime is 116665189. The next prime is 116665259. The reversal of 116665239 is 932566611.

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

It is not a de Polignac number, because 116665239 - 2⁸ = 116664983 is a prime.

It is a super-2 number, since 2×116665239² = 27221555981854242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 116665197 and 116665206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116665259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19444204 + ... + 19444209.

It is an arithmetic number, because the mean of its divisors is an integer number (38888414).

Almost surely, 2^116665239 is an apocalyptic number.

116665239 is a deficient number, since it is larger than the sum of its proper divisors (38888417).

116665239 is an equidigital number, since it uses as much as digits as its factorization.

116665239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38888416.

The product of its digits is 58320, while the sum is 39.

The square root of 116665239 is about 10801.1684090195. The cubic root of 116665239 is about 488.6304097964.

The spelling of 116665239 in words is "one hundred sixteen million, six hundred sixty-five thousand, two hundred thirty-nine".