11979644 has 12 divisors (see below), whose sum is σ = 21021000. Its totient is φ = 5973648.

The previous prime is 11979631. The next prime is 11979647. The reversal of 11979644 is 44697911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11979647) 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, 2294 + ... + 5405.

It is an arithmetic number, because the mean of its divisors is an integer number (1751750).

Almost surely, 2^11979644 is an apocalyptic number.

It is an amenable number.

11979644 is a deficient number, since it is larger than the sum of its proper divisors (9041356).

11979644 is a wasteful number, since it uses less digits than its factorization.

11979644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8092 (or 8090 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 11979644 is about 3461.1622325456. The cubic root of 11979644 is about 228.8133207805.

The spelling of 11979644 in words is "eleven million, nine hundred seventy-nine thousand, six hundred forty-four".