11195979 has 8 divisors (see below), whose sum is σ = 15806160. Its totient is φ = 7024896.

The previous prime is 11195971. The next prime is 11195999. The reversal of 11195979 is 97959111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11195979 - 2³ = 11195971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11195979.

It is not an unprimeable number, because it can be changed into a prime (11195971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109714 + ... + 109815.

It is an arithmetic number, because the mean of its divisors is an integer number (1975770).

Almost surely, 2^11195979 is an apocalyptic number.

11195979 is a deficient number, since it is larger than the sum of its proper divisors (4610181).

11195979 is a wasteful number, since it uses less digits than its factorization.

11195979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219549.

The product of its digits is 25515, while the sum is 42.

The square root of 11195979 is about 3346.0393004267. The cubic root of 11195979 is about 223.7110099243.

The spelling of 11195979 in words is "eleven million, one hundred ninety-five thousand, nine hundred seventy-nine".