8380321 has 2 divisors, whose sum is σ = 8380322. Its totient is φ = 8380320.

The previous prime is 8380291. The next prime is 8380357. The reversal of 8380321 is 1230838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8065600 + 314721 = 2840^2 + 561^2 .

It is a cyclic number.

It is not a de Polignac number, because 8380321 - 2¹¹ = 8378273 is a prime.

It is not a weakly prime, because it can be changed into another prime (8380381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4190160 + 4190161.

It is an arithmetic number, because the mean of its divisors is an integer number (4190161).

Almost surely, 2^8380321 is an apocalyptic number.

It is an amenable number.

8380321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8380321 is an equidigital number, since it uses as much as digits as its factorization.

8380321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 8380321 is about 2894.8784085001. The cubic root of 8380321 is about 203.1204038723.

The spelling of 8380321 in words is "eight million, three hundred eighty thousand, three hundred twenty-one".