779796397 has 2 divisors, whose sum is σ = 779796398. Its totient is φ = 779796396.

The previous prime is 779796379. The next prime is 779796421. The reversal of 779796397 is 793697977.

Together with previous prime (779796379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 758396521 + 21399876 = 27539^2 + 4626^2 .

It is a cyclic number.

It is not a de Polignac number, because 779796397 - 2²³ = 771407789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779796697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389898198 + 389898199.

It is an arithmetic number, because the mean of its divisors is an integer number (389898199).

Almost surely, 2^779796397 is an apocalyptic number.

It is an amenable number.

779796397 is a deficient number, since it is larger than the sum of its proper divisors (1).

779796397 is an equidigital number, since it uses as much as digits as its factorization.

779796397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31505922, while the sum is 64.

The square root of 779796397 is about 27924.8347712211. The cubic root of 779796397 is about 920.4363073063.

The spelling of 779796397 in words is "seven hundred seventy-nine million, seven hundred ninety-six thousand, three hundred ninety-seven".