86304209 has 4 divisors (see below), whose sum is σ = 86399040. Its totient is φ = 86209380.

The previous prime is 86304199. The next prime is 86304233. The reversal of 86304209 is 90240368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86304209 - 2²⁰ = 85255633 is a prime.

It is a super-2 number, since 2×86304209² = 14896832982231362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86304709) 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 3 ways as a sum of consecutive naturals, for example, 46037 + ... + 47874.

It is an arithmetic number, because the mean of its divisors is an integer number (21599760).

Almost surely, 2^86304209 is an apocalyptic number.

It is an amenable number.

86304209 is a deficient number, since it is larger than the sum of its proper divisors (94831).

86304209 is an equidigital number, since it uses as much as digits as its factorization.

86304209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94830.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 86304209 is about 9290.0058665213. The cubic root of 86304209 is about 441.9203411518.

The spelling of 86304209 in words is "eighty-six million, three hundred four thousand, two hundred nine".