86358639 has 4 divisors (see below), whose sum is σ = 115144856. Its totient is φ = 57572424.

The previous prime is 86358631. The next prime is 86358641. The reversal of 86358639 is 93685368.

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

It is not a de Polignac number, because 86358639 - 2³ = 86358631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86358631) 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, 14393104 + ... + 14393109.

It is an arithmetic number, because the mean of its divisors is an integer number (28786214).

Almost surely, 2^86358639 is an apocalyptic number.

86358639 is a deficient number, since it is larger than the sum of its proper divisors (28786217).

86358639 is a wasteful number, since it uses less digits than its factorization.

86358639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28786216.

The product of its digits is 933120, while the sum is 48.

The square root of 86358639 is about 9292.9348970064. The cubic root of 86358639 is about 442.0132244905.

The spelling of 86358639 in words is "eighty-six million, three hundred fifty-eight thousand, six hundred thirty-nine".