791342977 has 2 divisors, whose sum is σ = 791342978. Its totient is φ = 791342976.

The previous prime is 791342971. The next prime is 791343029. The reversal of 791342977 is 779243197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 641304976 + 150038001 = 25324^2 + 12249^2 .

It is a cyclic number.

It is not a de Polignac number, because 791342977 - 2¹⁹ = 790818689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 791342977.

It is not a weakly prime, because it can be changed into another prime (791342971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395671488 + 395671489.

It is an arithmetic number, because the mean of its divisors is an integer number (395671489).

Almost surely, 2^791342977 is an apocalyptic number.

It is an amenable number.

791342977 is a deficient number, since it is larger than the sum of its proper divisors (1).

791342977 is an equidigital number, since it uses as much as digits as its factorization.

791342977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 49.

The square root of 791342977 is about 28130.8189891443. The cubic root of 791342977 is about 924.9570866870.

The spelling of 791342977 in words is "seven hundred ninety-one million, three hundred forty-two thousand, nine hundred seventy-seven".