11979105 has 16 divisors (see below), whose sum is σ = 19358784. Its totient is φ = 6324800.

The previous prime is 11979089. The next prime is 11979109. The reversal of 11979105 is 50197911.

It is a happy number.

11979105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11979105 - 2⁴ = 11979089 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11979109) 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, 2439 + ... + 5468.

It is an arithmetic number, because the mean of its divisors is an integer number (1209924).

Almost surely, 2^11979105 is an apocalyptic number.

11979105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11979105 is a deficient number, since it is larger than the sum of its proper divisors (7379679).

11979105 is a wasteful number, since it uses less digits than its factorization.

11979105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8016.

The product of its (nonzero) digits is 2835, while the sum is 33.

The square root of 11979105 is about 3461.0843676513. The cubic root of 11979105 is about 228.8098890639.

The spelling of 11979105 in words is "eleven million, nine hundred seventy-nine thousand, one hundred five".