8609321 has 4 divisors (see below), whose sum is σ = 9839232. Its totient is φ = 7379412.

The previous prime is 8609309. The next prime is 8609323. The reversal of 8609321 is 1239068.

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 8609321 - 2⁶ = 8609257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8609323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614945 + ... + 614958.

It is an arithmetic number, because the mean of its divisors is an integer number (2459808).

Almost surely, 2^8609321 is an apocalyptic number.

It is an amenable number.

8609321 is a deficient number, since it is larger than the sum of its proper divisors (1229911).

8609321 is a wasteful number, since it uses less digits than its factorization.

8609321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229910.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 8609321 is about 2934.1644466526. The cubic root of 8609321 is about 204.9539535683.

The spelling of 8609321 in words is "eight million, six hundred nine thousand, three hundred twenty-one".