86495639 has 4 divisors (see below), whose sum is σ = 86532024. Its totient is φ = 86459256.

The previous prime is 86495627. The next prime is 86495671. The reversal of 86495639 is 93659468.

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-86495639 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 (86495039) 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, 14357 + ... + 19470.

It is an arithmetic number, because the mean of its divisors is an integer number (21633006).

Almost surely, 2^86495639 is an apocalyptic number.

86495639 is a deficient number, since it is larger than the sum of its proper divisors (36385).

86495639 is a wasteful number, since it uses less digits than its factorization.

86495639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36384.

The product of its digits is 1399680, while the sum is 50.

The square root of 86495639 is about 9300.3031671016. The cubic root of 86495639 is about 442.2468387090.

The spelling of 86495639 in words is "eighty-six million, four hundred ninety-five thousand, six hundred thirty-nine".