791039109 has 16 divisors (see below), whose sum is σ = 1206156800. Its totient is φ = 451735920.

The previous prime is 791039083. The next prime is 791039113. The reversal of 791039109 is 901930197.

It is not a de Polignac number, because 791039109 - 2⁵ = 791039077 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 (791039159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24594 + ... + 46764.

It is an arithmetic number, because the mean of its divisors is an integer number (75384800).

Almost surely, 2^791039109 is an apocalyptic number.

It is an amenable number.

791039109 is a deficient number, since it is larger than the sum of its proper divisors (415117691).

791039109 is a wasteful number, since it uses less digits than its factorization.

791039109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23880.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 791039109 is about 28125.4174902347. The cubic root of 791039109 is about 924.8386800242.

The spelling of 791039109 in words is "seven hundred ninety-one million, thirty-nine thousand, one hundred nine".