791779 has 4 divisors (see below), whose sum is σ = 794376. Its totient is φ = 789184.

The previous prime is 791773. The next prime is 791783. The reversal of 791779 is 977197.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977197 = 13 ⋅75169.

It is a cyclic number.

It is not a de Polignac number, because 791779 - 2¹¹ = 789731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769 + ... + 1474.

It is an arithmetic number, because the mean of its divisors is an integer number (198594).

2⁷⁹¹⁷⁷⁹ is an apocalyptic number.

791779 is a deficient number, since it is larger than the sum of its proper divisors (2597).

791779 is a wasteful number, since it uses less digits than its factorization.

791779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596.

The product of its digits is 27783, while the sum is 40.

The square root of 791779 is about 889.8196446472. The cubic root of 791779 is about 92.5126936561.

The spelling of 791779 in words is "seven hundred ninety-one thousand, seven hundred seventy-nine".