797122919 has 4 divisors (see below), whose sum is σ = 809020344. Its totient is φ = 785225496.

The previous prime is 797122889. The next prime is 797122973. The reversal of 797122919 is 919221797.

797122919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-797122919 is a prime.

It is a super-2 number, since 2×797122919² = 1270809895990161122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797122019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5948612 + ... + 5948745.

It is an arithmetic number, because the mean of its divisors is an integer number (202255086).

Almost surely, 2^797122919 is an apocalyptic number.

797122919 is a deficient number, since it is larger than the sum of its proper divisors (11897425).

797122919 is a wasteful number, since it uses less digits than its factorization.

797122919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11897424.

The product of its digits is 142884, while the sum is 47.

The square root of 797122919 is about 28233.3653502377. The cubic root of 797122919 is about 927.2035777279.

The spelling of 797122919 in words is "seven hundred ninety-seven million, one hundred twenty-two thousand, nine hundred nineteen".