11989936 has 20 divisors (see below), whose sum is σ = 26549392. Its totient is φ = 5138496.

The previous prime is 11989927. The next prime is 11989951. The reversal of 11989936 is 63998911.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53415 + ... + 53638.

Almost surely, 2^11989936 is an apocalyptic number.

11989936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11989936 is an abundant number, since it is smaller than the sum of its proper divisors (14559456).

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

11989936 is a wasteful number, since it uses less digits than its factorization.

11989936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107068 (or 107062 counting only the distinct ones).

The product of its digits is 104976, while the sum is 46.

The square root of 11989936 is about 3462.6486971681. The cubic root of 11989936 is about 228.8788283649.

The spelling of 11989936 in words is "eleven million, nine hundred eighty-nine thousand, nine hundred thirty-six".