85891388 has 48 divisors (see below), whose sum is σ = 171884160. Its totient is φ = 37195200.

The previous prime is 85891357. The next prime is 85891411. The reversal of 85891388 is 88319858.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105503 + ... + 106313.

It is an arithmetic number, because the mean of its divisors is an integer number (3580920).

Almost surely, 2^85891388 is an apocalyptic number.

It is an amenable number.

85891388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

85891388 is a wasteful number, since it uses less digits than its factorization.

85891388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 936 counting only the distinct ones).

The product of its digits is 552960, while the sum is 50.

The square root of 85891388 is about 9267.7606788264. The cubic root of 85891388 is about 441.2145986199.

The spelling of 85891388 in words is "eighty-five million, eight hundred ninety-one thousand, three hundred eighty-eight".