11791779 has 4 divisors (see below), whose sum is σ = 15722376. Its totient is φ = 7861184.

The previous prime is 11791753. The next prime is 11791781. The reversal of 11791779 is 97719711.

11791779 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11791779 - 2⁷ = 11791651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11791779.

It is not an unprimeable number, because it can be changed into a prime (11791739) 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, 1965294 + ... + 1965299.

It is an arithmetic number, because the mean of its divisors is an integer number (3930594).

Almost surely, 2^11791779 is an apocalyptic number.

11791779 is a deficient number, since it is larger than the sum of its proper divisors (3930597).

11791779 is an equidigital number, since it uses as much as digits as its factorization.

11791779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930596.

The product of its digits is 27783, while the sum is 42.

The square root of 11791779 is about 3433.9159861592. The cubic root of 11791779 is about 227.6109284733.

The spelling of 11791779 in words is "eleven million, seven hundred ninety-one thousand, seven hundred seventy-nine".