797979769 has 2 divisors, whose sum is σ = 797979770. Its totient is φ = 797979768.

The previous prime is 797979737. The next prime is 797979799. The reversal of 797979769 is 967979797.

It is a happy number.

797979769 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., 716258169 + 81721600 = 26763^2 + 9040^2 .

It is an emirp because it is prime and its reverse (967979797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 797979769 - 2⁵ = 797979737 is a prime.

It is a super-2 number, since 2×797979769² = 1273543423466586722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 797979698 and 797979707.

It is not a weakly prime, because it can be changed into another prime (797979719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398989884 + 398989885.

It is an arithmetic number, because the mean of its divisors is an integer number (398989885).

Almost surely, 2^797979769 is an apocalyptic number.

It is an amenable number.

797979769 is a deficient number, since it is larger than the sum of its proper divisors (1).

797979769 is an equidigital number, since it uses as much as digits as its factorization.

797979769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94517766, while the sum is 70.

The square root of 797979769 is about 28248.5356965631. The cubic root of 797979769 is about 927.5356845540.

The spelling of 797979769 in words is "seven hundred ninety-seven million, nine hundred seventy-nine thousand, seven hundred sixty-nine".