8330321 has 4 divisors (see below), whose sum is σ = 8343732. Its totient is φ = 8316912.

The previous prime is 8330299. The next prime is 8330353. The reversal of 8330321 is 1230338.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3330625 + 4999696 = 1825^2 + 2236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8330321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8330293 and 8330302.

It is not an unprimeable number, because it can be changed into a prime (8330521) 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, 5726 + ... + 7031.

It is an arithmetic number, because the mean of its divisors is an integer number (2085933).

Almost surely, 2^8330321 is an apocalyptic number.

It is an amenable number.

8330321 is a deficient number, since it is larger than the sum of its proper divisors (13411).

8330321 is a wasteful number, since it uses less digits than its factorization.

8330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13410.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 8330321 is about 2886.2295473507. The cubic root of 8330321 is about 202.7156347486.

Adding to 8330321 its reverse (1230338), we get a palindrome (9560659).

The spelling of 8330321 in words is "eight million, three hundred thirty thousand, three hundred twenty-one".