791566379 has 2 divisors, whose sum is σ = 791566380. Its totient is φ = 791566378.

The previous prime is 791566331. The next prime is 791566421. The reversal of 791566379 is 973665197.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 791566379 - 2¹² = 791562283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 791566379.

It is not a weakly prime, because it can be changed into another prime (791562379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395783189 + 395783190.

It is an arithmetic number, because the mean of its divisors is an integer number (395783190).

Almost surely, 2^791566379 is an apocalyptic number.

791566379 is a deficient number, since it is larger than the sum of its proper divisors (1).

791566379 is an equidigital number, since it uses as much as digits as its factorization.

791566379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2143260, while the sum is 53.

The square root of 791566379 is about 28134.7894785086. The cubic root of 791566379 is about 925.0441192494.

The spelling of 791566379 in words is "seven hundred ninety-one million, five hundred sixty-six thousand, three hundred seventy-nine".