791159797 has 2 divisors, whose sum is σ = 791159798. Its totient is φ = 791159796.

The previous prime is 791159749. The next prime is 791159807. The reversal of 791159797 is 797951197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 790678161 + 481636 = 28119^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 791159797 - 2¹⁹ = 790635509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791159717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395579898 + 395579899.

It is an arithmetic number, because the mean of its divisors is an integer number (395579899).

Almost surely, 2^791159797 is an apocalyptic number.

It is an amenable number.

791159797 is a deficient number, since it is larger than the sum of its proper divisors (1).

791159797 is an equidigital number, since it uses as much as digits as its factorization.

791159797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1250235, while the sum is 55.

The square root of 791159797 is about 28127.5629410015. The cubic root of 791159797 is about 924.8857115188.

The spelling of 791159797 in words is "seven hundred ninety-one million, one hundred fifty-nine thousand, seven hundred ninety-seven".