791343197 has 4 divisors (see below), whose sum is σ = 791460636. Its totient is φ = 791225760.

The previous prime is 791343187. The next prime is 791343199.

791343197 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 611622361 + 179720836 = 24731^2 + 13406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791343197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791343199) 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 in 3 ways as a sum of consecutive naturals, for example, 47954 + ... + 62307.

It is an arithmetic number, because the mean of its divisors is an integer number (197865159).

Almost surely, 2^791343197 is an apocalyptic number.

It is an amenable number.

791343197 is a deficient number, since it is larger than the sum of its proper divisors (117439).

791343197 is a wasteful number, since it uses less digits than its factorization.

791343197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117438.

The product of its digits is 142884, while the sum is 44.

The square root of 791343197 is about 28130.8228994461. The cubic root of 791343197 is about 924.9571724023.

The spelling of 791343197 in words is "seven hundred ninety-one million, three hundred forty-three thousand, one hundred ninety-seven".