86859855 has 12 divisors (see below), whose sum is σ = 150557160. Its totient is φ = 46325232.

The previous prime is 86859847. The next prime is 86859863. The reversal of 86859855 is 55895868.

It is an interprime number because it is at equal distance from previous prime (86859847) and next prime (86859863).

It is not a de Polignac number, because 86859855 - 2³ = 86859847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 965065 + ... + 965154.

It is an arithmetic number, because the mean of its divisors is an integer number (12546430).

Almost surely, 2^86859855 is an apocalyptic number.

86859855 is a deficient number, since it is larger than the sum of its proper divisors (63697305).

86859855 is a wasteful number, since it uses less digits than its factorization.

86859855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930230 (or 1930227 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 54.

The square root of 86859855 is about 9319.8634646651. The cubic root of 86859855 is about 442.8667074145.

The spelling of 86859855 in words is "eighty-six million, eight hundred fifty-nine thousand, eight hundred fifty-five".