11208979 has 4 divisors (see below), whose sum is σ = 11230240. Its totient is φ = 11187720.

The previous prime is 11208973. The next prime is 11209007. The reversal of 11208979 is 97980211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97980211 = 7 ⋅13997173.

It is a cyclic number.

It is not a de Polignac number, because 11208979 - 2⁷ = 11208851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11208973) 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, 9819 + ... + 10900.

It is an arithmetic number, because the mean of its divisors is an integer number (2807560).

Almost surely, 2^11208979 is an apocalyptic number.

11208979 is a deficient number, since it is larger than the sum of its proper divisors (21261).

11208979 is an equidigital number, since it uses as much as digits as its factorization.

11208979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21260.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 11208979 is about 3347.9813320865. The cubic root of 11208979 is about 223.7975623742.

The spelling of 11208979 in words is "eleven million, two hundred eight thousand, nine hundred seventy-nine".