11001979 has 4 divisors (see below), whose sum is σ = 11009376. Its totient is φ = 10994584.

The previous prime is 11001973. The next prime is 11001983. The reversal of 11001979 is 97910011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11001979 - 2²³ = 2613371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001973) 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, 604 + ... + 4729.

It is an arithmetic number, because the mean of its divisors is an integer number (2752344).

Almost surely, 2^11001979 is an apocalyptic number.

11001979 is a deficient number, since it is larger than the sum of its proper divisors (7397).

11001979 is an equidigital number, since it uses as much as digits as its factorization.

11001979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7396.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 11001979 is about 3316.9231224133. The cubic root of 11001979 is about 222.4113453984.

The spelling of 11001979 in words is "eleven million, one thousand, nine hundred seventy-nine".