11209979 has 8 divisors (see below), whose sum is σ = 12651120. Its totient is φ = 9839200.

The previous prime is 11209973. The next prime is 11210009. The reversal of 11209979 is 97990211.

11209979 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 11209979 - 2⁴ = 11209963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11209973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17252 + ... + 17889.

It is an arithmetic number, because the mean of its divisors is an integer number (1581390).

Almost surely, 2^11209979 is an apocalyptic number.

11209979 is a deficient number, since it is larger than the sum of its proper divisors (1441141).

11209979 is a wasteful number, since it uses less digits than its factorization.

11209979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35181.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 11209979 is about 3348.1306724798. The cubic root of 11209979 is about 223.8042174825.

The spelling of 11209979 in words is "eleven million, two hundred nine thousand, nine hundred seventy-nine".