86464139 has 8 divisors (see below), whose sum is σ = 87250128. Its totient is φ = 85681440.

The previous prime is 86464129. The next prime is 86464163. The reversal of 86464139 is 93146468.

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 86464139 - 2²⁰ = 85415563 is a prime.

It is a super-2 number, since 2×86464139² = 14952094666022642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86464096 and 86464105.

It is not an unprimeable number, because it can be changed into a prime (86464129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108089 + ... + 108885.

It is an arithmetic number, because the mean of its divisors is an integer number (10906266).

Almost surely, 2^86464139 is an apocalyptic number.

86464139 is a deficient number, since it is larger than the sum of its proper divisors (785989).

86464139 is a wasteful number, since it uses less digits than its factorization.

86464139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645.

The product of its digits is 124416, while the sum is 41.

The square root of 86464139 is about 9298.6095197078. The cubic root of 86464139 is about 442.1931463417.

The spelling of 86464139 in words is "eighty-six million, four hundred sixty-four thousand, one hundred thirty-nine".