797117897 has 2 divisors, whose sum is σ = 797117898. Its totient is φ = 797117896.

The previous prime is 797117779. The next prime is 797117903. The reversal of 797117897 is 798711797.

797117897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 710702281 + 86415616 = 26659^2 + 9296^2 .

It is a cyclic number.

It is not a de Polignac number, because 797117897 - 2¹⁸ = 796855753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (797117597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398558948 + 398558949.

It is an arithmetic number, because the mean of its divisors is an integer number (398558949).

Almost surely, 2^797117897 is an apocalyptic number.

It is an amenable number.

797117897 is a deficient number, since it is larger than the sum of its proper divisors (1).

797117897 is an equidigital number, since it uses as much as digits as its factorization.

797117897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555848, while the sum is 56.

The square root of 797117897 is about 28233.2764127722. The cubic root of 797117897 is about 927.2016305476.

The spelling of 797117897 in words is "seven hundred ninety-seven million, one hundred seventeen thousand, eight hundred ninety-seven".