12189948 has 12 divisors (see below), whose sum is σ = 28443240. Its totient is φ = 4063312.

The previous prime is 12189929. The next prime is 12189949. The reversal of 12189948 is 84998121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507903 + ... + 507926.

It is an arithmetic number, because the mean of its divisors is an integer number (2370270).

Almost surely, 2^12189948 is an apocalyptic number.

It is an amenable number.

12189948 is an abundant number, since it is smaller than the sum of its proper divisors (16253292).

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

12189948 is a wasteful number, since it uses less digits than its factorization.

12189948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015836 (or 1015834 counting only the distinct ones).

The product of its digits is 41472, while the sum is 42.

The square root of 12189948 is about 3491.4106031803. The cubic root of 12189948 is about 230.1445090599.

The spelling of 12189948 in words is "twelve million, one hundred eighty-nine thousand, nine hundred forty-eight".