7969321 has 2 divisors, whose sum is σ = 7969322. Its totient is φ = 7969320.

The previous prime is 7969309. The next prime is 7969331. The reversal of 7969321 is 1239697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7901721 + 67600 = 2811^2 + 260^2 .

It is an emirp because it is prime and its reverse (1239697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7969321 - 2⁷ = 7969193 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (7969331) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3984660 + 3984661.

It is an arithmetic number, because the mean of its divisors is an integer number (3984661).

Almost surely, 2^7969321 is an apocalyptic number.

It is an amenable number.

7969321 is a deficient number, since it is larger than the sum of its proper divisors (1).

7969321 is an equidigital number, since it uses as much as digits as its factorization.

7969321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 7969321 is about 2822.9985830673. The cubic root of 7969321 is about 199.7440141627.

The spelling of 7969321 in words is "seven million, nine hundred sixty-nine thousand, three hundred twenty-one".