11779111 has 4 divisors (see below), whose sum is σ = 11921112. Its totient is φ = 11637112.

The previous prime is 11779109. The next prime is 11779121. The reversal of 11779111 is 11197711.

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 11779111 - 2¹ = 11779109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11779111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11779121) 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, 70876 + ... + 71041.

It is an arithmetic number, because the mean of its divisors is an integer number (2980278).

Almost surely, 2^11779111 is an apocalyptic number.

11779111 is a deficient number, since it is larger than the sum of its proper divisors (142001).

11779111 is an equidigital number, since it uses as much as digits as its factorization.

11779111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142000.

The product of its digits is 441, while the sum is 28.

The square root of 11779111 is about 3432.0709491501. The cubic root of 11779111 is about 227.5293912033.

The spelling of 11779111 in words is "eleven million, seven hundred seventy-nine thousand, one hundred eleven".