7994321 has 2 divisors, whose sum is σ = 7994322. Its totient is φ = 7994320.

The previous prime is 7994309. The next prime is 7994341. The reversal of 7994321 is 1234997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6760000 + 1234321 = 2600^2 + 1111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7994321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7994341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3997160 + 3997161.

It is an arithmetic number, because the mean of its divisors is an integer number (3997161).

Almost surely, 2^7994321 is an apocalyptic number.

It is an amenable number.

7994321 is a deficient number, since it is larger than the sum of its proper divisors (1).

7994321 is an equidigital number, since it uses as much as digits as its factorization.

7994321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 7994321 is about 2827.4230316668. The cubic root of 7994321 is about 199.9526637973.

The spelling of 7994321 in words is "seven million, nine hundred ninety-four thousand, three hundred twenty-one".