791330440 has 16 divisors (see below), whose sum is σ = 1780493580. Its totient is φ = 316532160.

The previous prime is 791330401. The next prime is 791330473. The reversal of 791330440 is 44033197.

It can be written as a sum of positive squares in 2 ways, for example, as 679436356 + 111894084 = 26066^2 + 10578^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9891591 + ... + 9891670.

Almost surely, 2^791330440 is an apocalyptic number.

It is an amenable number.

791330440 is an abundant number, since it is smaller than the sum of its proper divisors (989163140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

791330440 is a wasteful number, since it uses less digits than its factorization.

791330440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19783272 (or 19783268 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 791330440 is about 28130.5961543654. The cubic root of 791330440 is about 924.9522020590.

The spelling of 791330440 in words is "seven hundred ninety-one million, three hundred thirty thousand, four hundred forty".