791388659 has 2 divisors, whose sum is σ = 791388660. Its totient is φ = 791388658.

The previous prime is 791388629. The next prime is 791388691. The reversal of 791388659 is 956883197.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 791388659 - 2¹² = 791384563 is a prime.

It is not a weakly prime, because it can be changed into another prime (791388629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395694329 + 395694330.

It is an arithmetic number, because the mean of its divisors is an integer number (395694330).

Almost surely, 2^791388659 is an apocalyptic number.

791388659 is a deficient number, since it is larger than the sum of its proper divisors (1).

791388659 is an equidigital number, since it uses as much as digits as its factorization.

791388659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 56.

The square root of 791388659 is about 28131.6309338794. The cubic root of 791388659 is about 924.9748847332.

The spelling of 791388659 in words is "seven hundred ninety-one million, three hundred eighty-eight thousand, six hundred fifty-nine".