797122889 has 2 divisors, whose sum is σ = 797122890. Its totient is φ = 797122888.

The previous prime is 797122853. The next prime is 797122973. The reversal of 797122889 is 988221797.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 557337664 + 239785225 = 23608^2 + 15485^2 .

It is a cyclic number.

It is not a de Polignac number, because 797122889 - 2²⁰ = 796074313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 797122889.

It is not a weakly prime, because it can be changed into another prime (797122819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398561444 + 398561445.

It is an arithmetic number, because the mean of its divisors is an integer number (398561445).

Almost surely, 2^797122889 is an apocalyptic number.

It is an amenable number.

797122889 is a deficient number, since it is larger than the sum of its proper divisors (1).

797122889 is an equidigital number, since it uses as much as digits as its factorization.

797122889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 53.

The square root of 797122889 is about 28233.3648189514. The cubic root of 797122889 is about 927.2035660961.

The spelling of 797122889 in words is "seven hundred ninety-seven million, one hundred twenty-two thousand, eight hundred eighty-nine".