85939956 has 18 divisors (see below), whose sum is σ = 217237202. Its totient is φ = 28646640.

The previous prime is 85939949. The next prime is 85939961. The reversal of 85939956 is 65993958.

It can be written as a sum of positive squares in only one way, i.e., 85932900 + 7056 = 9270^2 + 84^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1193575 + ... + 1193646.

Almost surely, 2^85939956 is an apocalyptic number.

It is an amenable number.

85939956 is an abundant number, since it is smaller than the sum of its proper divisors (131297246).

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

85939956 is a wasteful number, since it uses less digits than its factorization.

85939956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387231 (or 2387226 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 54.

The square root of 85939956 is about 9270.3805747121. The cubic root of 85939956 is about 441.2977457717.

The spelling of 85939956 in words is "eighty-five million, nine hundred thirty-nine thousand, nine hundred fifty-six".