86804431 has 12 divisors (see below), whose sum is σ = 106917408. Its totient is φ = 70026432.

The previous prime is 86804413. The next prime is 86804437. The reversal of 86804431 is 13440868.

It is not a de Polignac number, because 86804431 - 2⁹ = 86803919 is a prime.

It is a super-2 number, since 2×86804431² = 15070018482467522, 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 (86804437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51271 + ... + 52936.

It is an arithmetic number, because the mean of its divisors is an integer number (8909784).

Almost surely, 2^86804431 is an apocalyptic number.

86804431 is a deficient number, since it is larger than the sum of its proper divisors (20112977).

86804431 is a wasteful number, since it uses less digits than its factorization.

86804431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104238 (or 104231 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 86804431 is about 9316.8895560697. The cubic root of 86804431 is about 442.7724917881.

The spelling of 86804431 in words is "eighty-six million, eight hundred four thousand, four hundred thirty-one".