86288857 has 4 divisors (see below), whose sum is σ = 87751440. Its totient is φ = 84826276.

The previous prime is 86288849. The next prime is 86288863. The reversal of 86288857 is 75888268.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86288857 - 2³ = 86288849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86288827) 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 3 ways as a sum of consecutive naturals, for example, 731203 + ... + 731320.

It is an arithmetic number, because the mean of its divisors is an integer number (21937860).

Almost surely, 2^86288857 is an apocalyptic number.

It is an amenable number.

86288857 is a deficient number, since it is larger than the sum of its proper divisors (1462583).

86288857 is a wasteful number, since it uses less digits than its factorization.

86288857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462582.

The product of its digits is 1720320, while the sum is 52.

The square root of 86288857 is about 9289.1795654945. The cubic root of 86288857 is about 441.8941363140.

The spelling of 86288857 in words is "eighty-six million, two hundred eighty-eight thousand, eight hundred fifty-seven".