86138985 has 8 divisors (see below), whose sum is σ = 137822400. Its totient is φ = 45940784.

The previous prime is 86138957. The next prime is 86138999. The reversal of 86138985 is 58983168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86138985 - 2⁵ = 86138953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2871285 + ... + 2871314.

It is an arithmetic number, because the mean of its divisors is an integer number (17227800).

Almost surely, 2^86138985 is an apocalyptic number.

It is an amenable number.

86138985 is a deficient number, since it is larger than the sum of its proper divisors (51683415).

86138985 is a wasteful number, since it uses less digits than its factorization.

86138985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5742607.

The product of its digits is 414720, while the sum is 48.

The square root of 86138985 is about 9281.1090393336. The cubic root of 86138985 is about 441.6381513966.

The spelling of 86138985 in words is "eighty-six million, one hundred thirty-eight thousand, nine hundred eighty-five".