7997219 has 2 divisors, whose sum is σ = 7997220. Its totient is φ = 7997218.

The previous prime is 7997207. The next prime is 7997237. The reversal of 7997219 is 9127997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7997219 - 2⁴ = 7997203 is a prime.

It is a super-2 number, since 2×7997219² = 127911023467922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7997219.

It is not a weakly prime, because it can be changed into another prime (7997239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3998609 + 3998610.

It is an arithmetic number, because the mean of its divisors is an integer number (3998610).

Almost surely, 2^7997219 is an apocalyptic number.

7997219 is a deficient number, since it is larger than the sum of its proper divisors (1).

7997219 is an equidigital number, since it uses as much as digits as its factorization.

7997219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71442, while the sum is 44.

The square root of 7997219 is about 2827.9354660246. The cubic root of 7997219 is about 199.9768223141.

The spelling of 7997219 in words is "seven million, nine hundred ninety-seven thousand, two hundred nineteen".