797638319 has 2 divisors, whose sum is σ = 797638320. Its totient is φ = 797638318.

The previous prime is 797638279. The next prime is 797638349. The reversal of 797638319 is 913836797.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (913836797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 797638319 - 2⁸ = 797638063 is a prime.

It is a super-2 number, since 2×797638319² = 1272453775874291522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (797638349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398819159 + 398819160.

It is an arithmetic number, because the mean of its divisors is an integer number (398819160).

Almost surely, 2^797638319 is an apocalyptic number.

797638319 is a deficient number, since it is larger than the sum of its proper divisors (1).

797638319 is an equidigital number, since it uses as much as digits as its factorization.

797638319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 53.

The square root of 797638319 is about 28242.4913738147. The cubic root of 797638319 is about 927.4033703213.

The spelling of 797638319 in words is "seven hundred ninety-seven million, six hundred thirty-eight thousand, three hundred nineteen".