85773391 has 12 divisors (see below), whose sum is σ = 99244600. Its totient is φ = 73869840.

The previous prime is 85773377. The next prime is 85773407. The reversal of 85773391 is 19337758.

It is not a de Polignac number, because 85773391 - 2⁷ = 85773263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85773301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16356 + ... + 20953.

Almost surely, 2^85773391 is an apocalyptic number.

85773391 is a deficient number, since it is larger than the sum of its proper divisors (13471209).

85773391 is a wasteful number, since it uses less digits than its factorization.

85773391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37350 (or 37339 counting only the distinct ones).

The product of its digits is 158760, while the sum is 43.

The square root of 85773391 is about 9261.3924978914. The cubic root of 85773391 is about 441.0124601625.

The spelling of 85773391 in words is "eighty-five million, seven hundred seventy-three thousand, three hundred ninety-one".