86443691 has 8 divisors (see below), whose sum is σ = 92145600. Its totient is φ = 80810368.

The previous prime is 86443663. The next prime is 86443723. The reversal of 86443691 is 19634468.

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 86443691 - 2²⁶ = 19334827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86443661) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14531 + ... + 19596.

It is an arithmetic number, because the mean of its divisors is an integer number (11518200).

Almost surely, 2^86443691 is an apocalyptic number.

86443691 is a deficient number, since it is larger than the sum of its proper divisors (5701909).

86443691 is a wasteful number, since it uses less digits than its factorization.

86443691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34293.

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

The square root of 86443691 is about 9297.5099354612. The cubic root of 86443691 is about 442.1582853444.

The spelling of 86443691 in words is "eighty-six million, four hundred forty-three thousand, six hundred ninety-one".