86464391 has 4 divisors (see below), whose sum is σ = 93115512. Its totient is φ = 79813272.

The previous prime is 86464373. The next prime is 86464403. The reversal of 86464391 is 19346468.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86464391 - 2⁶ = 86464327 is a prime.

It is a super-2 number, since 2×86464391² = 14952181822001762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86464331) 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, 3325541 + ... + 3325566.

It is an arithmetic number, because the mean of its divisors is an integer number (23278878).

Almost surely, 2^86464391 is an apocalyptic number.

86464391 is a deficient number, since it is larger than the sum of its proper divisors (6651121).

86464391 is a wasteful number, since it uses less digits than its factorization.

86464391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651120.

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

The square root of 86464391 is about 9298.6230701110. The cubic root of 86464391 is about 442.1935759324.

The spelling of 86464391 in words is "eighty-six million, four hundred sixty-four thousand, three hundred ninety-one".