86398771 has 4 divisors (see below), whose sum is σ = 86463072. Its totient is φ = 86334472.

The previous prime is 86398751. The next prime is 86398799. The reversal of 86398771 is 17789368.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86398771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86398751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30091 + ... + 32836.

It is an arithmetic number, because the mean of its divisors is an integer number (21615768).

Almost surely, 2^86398771 is an apocalyptic number.

86398771 is a deficient number, since it is larger than the sum of its proper divisors (64301).

86398771 is a wasteful number, since it uses less digits than its factorization.

86398771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64300.

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

The square root of 86398771 is about 9295.0939209886. The cubic root of 86398771 is about 442.0816836812.

The spelling of 86398771 in words is "eighty-six million, three hundred ninety-eight thousand, seven hundred seventy-one".