86305309 has 4 divisors (see below), whose sum is σ = 87345216. Its totient is φ = 85265404.

The previous prime is 86305273. The next prime is 86305319. The reversal of 86305309 is 90350368.

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 86305309 - 2¹⁵ = 86272541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86305319) 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, 519829 + ... + 519994.

It is an arithmetic number, because the mean of its divisors is an integer number (21836304).

Almost surely, 2^86305309 is an apocalyptic number.

It is an amenable number.

86305309 is a deficient number, since it is larger than the sum of its proper divisors (1039907).

86305309 is a wasteful number, since it uses less digits than its factorization.

86305309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039906.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 86305309 is about 9290.0650697398. The cubic root of 86305309 is about 441.9222186589.

The spelling of 86305309 in words is "eighty-six million, three hundred five thousand, three hundred nine".