11989968 has 40 divisors (see below), whose sum is σ = 31099200. Its totient is φ = 3980544.

The previous prime is 11989951. The next prime is 11989973. The reversal of 11989968 is 86998911.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11989968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20788 + ... + 21356.

It is an arithmetic number, because the mean of its divisors is an integer number (777480).

Almost surely, 2^11989968 is an apocalyptic number.

It is an amenable number.

11989968 is an abundant number, since it is smaller than the sum of its proper divisors (19109232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11989968 is a wasteful number, since it uses less digits than its factorization.

11989968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1013 counting only the distinct ones).

The product of its digits is 279936, while the sum is 51.

The square root of 11989968 is about 3462.6533179052. The cubic root of 11989968 is about 228.8790319834.

The spelling of 11989968 in words is "eleven million, nine hundred eighty-nine thousand, nine hundred sixty-eight".