85439732 has 36 divisors (see below), whose sum is σ = 183093120. Its totient is φ = 34688304.

The previous prime is 85439723. The next prime is 85439741. The reversal of 85439732 is 23793458.

It is an interprime number because it is at equal distance from previous prime (85439723) and next prime (85439741).

It is a self number, because there is not a number n which added to its sum of digits gives 85439732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7748 + ... + 15195.

It is an arithmetic number, because the mean of its divisors is an integer number (5085920).

Almost surely, 2^85439732 is an apocalyptic number.

It is an amenable number.

85439732 is an abundant number, since it is smaller than the sum of its proper divisors (97653388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85439732 is a wasteful number, since it uses less digits than its factorization.

85439732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22980 (or 22971 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 85439732 is about 9243.3615097539. The cubic root of 85439732 is about 440.4398700307.

The spelling of 85439732 in words is "eighty-five million, four hundred thirty-nine thousand, seven hundred thirty-two".