86239845 has 24 divisors (see below), whose sum is σ = 149700096. Its totient is φ = 45927648.

The previous prime is 86239831. The next prime is 86239847. The reversal of 86239845 is 54893268.

It is not a de Polignac number, because 86239845 - 2⁷ = 86239717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 86239845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86239847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54252 + ... + 55818.

It is an arithmetic number, because the mean of its divisors is an integer number (6237504).

Almost surely, 2^86239845 is an apocalyptic number.

It is an amenable number.

86239845 is a deficient number, since it is larger than the sum of its proper divisors (63460251).

86239845 is a wasteful number, since it uses less digits than its factorization.

86239845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801 (or 2798 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 86239845 is about 9286.5410675881. The cubic root of 86239845 is about 441.8104552994.

The spelling of 86239845 in words is "eighty-six million, two hundred thirty-nine thousand, eight hundred forty-five".