8009321 has 2 divisors, whose sum is σ = 8009322. Its totient is φ = 8009320.

The previous prime is 8009303. The next prime is 8009347. The reversal of 8009321 is 1239008.

8009321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7425625 + 583696 = 2725^2 + 764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8009321 is a prime.

It is not a weakly prime, because it can be changed into another prime (8089321) 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 as a sum of consecutive naturals, namely, 4004660 + 4004661.

It is an arithmetic number, because the mean of its divisors is an integer number (4004661).

Almost surely, 2^8009321 is an apocalyptic number.

It is an amenable number.

8009321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8009321 is an equidigital number, since it uses as much as digits as its factorization.

8009321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 8009321 is about 2830.0743806480. The cubic root of 8009321 is about 200.0776448525.

The spelling of 8009321 in words is "eight million, nine thousand, three hundred twenty-one".