791222219 has 2 divisors, whose sum is σ = 791222220. Its totient is φ = 791222218.

The previous prime is 791222189. The next prime is 791222233. The reversal of 791222219 is 912222197.

It is a strong prime.

It is an emirp because it is prime and its reverse (912222197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 791222219 - 2²⁸ = 522786763 is a prime.

It is a super-2 number, since 2×791222219² = 1252065199678567922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (791222519) 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, 395611109 + 395611110.

It is an arithmetic number, because the mean of its divisors is an integer number (395611110).

Almost surely, 2^791222219 is an apocalyptic number.

791222219 is a deficient number, since it is larger than the sum of its proper divisors (1).

791222219 is an equidigital number, since it uses as much as digits as its factorization.

791222219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 35.

The square root of 791222219 is about 28128.6725424432. The cubic root of 791222219 is about 924.9100351754.

The spelling of 791222219 in words is "seven hundred ninety-one million, two hundred twenty-two thousand, two hundred nineteen".