85534239 has 32 divisors (see below), whose sum is σ = 136249344. Its totient is φ = 46700640.

The previous prime is 85534213. The next prime is 85534249. The reversal of 85534239 is 93243558.

It is not a de Polignac number, because 85534239 - 2⁸ = 85533983 is a prime.

It is a super-2 number, since 2×85534239² = 14632212082618242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85534197 and 85534206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85534249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53242 + ... + 54824.

It is an arithmetic number, because the mean of its divisors is an integer number (4257792).

Almost surely, 2^85534239 is an apocalyptic number.

85534239 is a deficient number, since it is larger than the sum of its proper divisors (50715105).

85534239 is a wasteful number, since it uses less digits than its factorization.

85534239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707.

The product of its digits is 129600, while the sum is 39.

The square root of 85534239 is about 9248.4722522155. The cubic root of 85534239 is about 440.6022040015.

The spelling of 85534239 in words is "eighty-five million, five hundred thirty-four thousand, two hundred thirty-nine".