11989684 has 48 divisors (see below), whose sum is σ = 26091520. Its totient is φ = 4704480.

The previous prime is 11989669. The next prime is 11989687. The reversal of 11989684 is 48698911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16129 + ... + 16855.

Almost surely, 2^11989684 is an apocalyptic number.

11989684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11989684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13045760).

11989684 is an abundant number, since it is smaller than the sum of its proper divisors (14101836).

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

11989684 is a wasteful number, since it uses less digits than its factorization.

11989684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 786 counting only the distinct ones).

The product of its digits is 124416, while the sum is 46.

The square root of 11989684 is about 3462.6123086479. The cubic root of 11989684 is about 228.8772248571.

The spelling of 11989684 in words is "eleven million, nine hundred eighty-nine thousand, six hundred eighty-four".