86391877 has 32 divisors (see below), whose sum is σ = 105283584. Its totient is φ = 69854400.

The previous prime is 86391863. The next prime is 86391881. The reversal of 86391877 is 77819368.

It is not a de Polignac number, because 86391877 - 2¹⁹ = 85867589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86391877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86391847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 680188 + ... + 680314.

It is an arithmetic number, because the mean of its divisors is an integer number (3290112).

Almost surely, 2^86391877 is an apocalyptic number.

It is an amenable number.

86391877 is a deficient number, since it is larger than the sum of its proper divisors (18891707).

86391877 is a wasteful number, since it uses less digits than its factorization.

86391877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289.

The product of its digits is 508032, while the sum is 49.

The square root of 86391877 is about 9294.7230727978. The cubic root of 86391877 is about 442.0699250564.

The spelling of 86391877 in words is "eighty-six million, three hundred ninety-one thousand, eight hundred seventy-seven".