85692239 has 2 divisors, whose sum is σ = 85692240. Its totient is φ = 85692238.

The previous prime is 85692199. The next prime is 85692241. The reversal of 85692239 is 93229658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85692239 - 2²⁴ = 68915023 is a prime.

Together with 85692241, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85692239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85692289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42846119 + 42846120.

It is an arithmetic number, because the mean of its divisors is an integer number (42846120).

Almost surely, 2^85692239 is an apocalyptic number.

85692239 is a deficient number, since it is larger than the sum of its proper divisors (1).

85692239 is an equidigital number, since it uses as much as digits as its factorization.

85692239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 85692239 is about 9257.0102624984. The cubic root of 85692239 is about 440.8733325706.

The spelling of 85692239 in words is "eighty-five million, six hundred ninety-two thousand, two hundred thirty-nine".