791587117 has 2 divisors, whose sum is σ = 791587118. Its totient is φ = 791587116.

The previous prime is 791587073. The next prime is 791587151. The reversal of 791587117 is 711785197.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511392996 + 280194121 = 22614^2 + 16739^2 .

It is a cyclic number.

It is not a de Polignac number, because 791587117 - 2¹⁵ = 791554349 is a prime.

It is a super-2 number, since 2×791587117² = 1253220327600743378, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791587187) 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, 395793558 + 395793559.

It is an arithmetic number, because the mean of its divisors is an integer number (395793559).

Almost surely, 2^791587117 is an apocalyptic number.

It is an amenable number.

791587117 is a deficient number, since it is larger than the sum of its proper divisors (1).

791587117 is an equidigital number, since it uses as much as digits as its factorization.

791587117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123480, while the sum is 46.

The square root of 791587117 is about 28135.1580233700. The cubic root of 791587117 is about 925.0521974927.

The spelling of 791587117 in words is "seven hundred ninety-one million, five hundred eighty-seven thousand, one hundred seventeen".