11709979 has 8 divisors (see below), whose sum is σ = 12046320. Its totient is φ = 11378016.

The previous prime is 11709961. The next prime is 11709983. The reversal of 11709979 is 97990711.

11709979 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11709979 - 2¹¹ = 11707931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11709989) 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, 4764 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (1505790).

Almost surely, 2^11709979 is an apocalyptic number.

11709979 is a deficient number, since it is larger than the sum of its proper divisors (336341).

11709979 is a wasteful number, since it uses less digits than its factorization.

11709979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189.

The product of its (nonzero) digits is 35721, while the sum is 43.

The square root of 11709979 is about 3421.9846580603. The cubic root of 11709979 is about 227.0833916412.

The spelling of 11709979 in words is "eleven million, seven hundred nine thousand, nine hundred seventy-nine".