791192089 has 2 divisors, whose sum is σ = 791192090. Its totient is φ = 791192088.

The previous prime is 791192081. The next prime is 791192099. The reversal of 791192089 is 980291197.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 782880400 + 8311689 = 27980^2 + 2883^2 .

It is a cyclic number.

It is not a de Polignac number, because 791192089 - 2³ = 791192081 is a prime.

It is not a weakly prime, because it can be changed into another prime (791192081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395596044 + 395596045.

It is an arithmetic number, because the mean of its divisors is an integer number (395596045).

Almost surely, 2^791192089 is an apocalyptic number.

It is an amenable number.

791192089 is a deficient number, since it is larger than the sum of its proper divisors (1).

791192089 is an equidigital number, since it uses as much as digits as its factorization.

791192089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 46.

The square root of 791192089 is about 28128.1369628349. The cubic root of 791192089 is about 924.8982947345.

It can be divided in two parts, 7911 and 92089, that added together give a 5-th power (100000 = 10⁵).

The spelling of 791192089 in words is "seven hundred ninety-one million, one hundred ninety-two thousand, eighty-nine".