198889412 has 12 divisors (see below), whose sum is σ = 348203520. Its totient is φ = 99402696.

The previous prime is 198889399. The next prime is 198889417. The reversal of 198889412 is 214988891.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (198889417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733 + ... + 20019.

It is an arithmetic number, because the mean of its divisors is an integer number (29016960).

Almost surely, 2^198889412 is an apocalyptic number.

It is an amenable number.

198889412 is a deficient number, since it is larger than the sum of its proper divisors (149314108).

198889412 is a wasteful number, since it uses less digits than its factorization.

198889412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21010 (or 21008 counting only the distinct ones).

The product of its digits is 331776, while the sum is 50.

The square root of 198889412 is about 14102.8157472187. The cubic root of 198889412 is about 583.7190781567.

The spelling of 198889412 in words is "one hundred ninety-eight million, eight hundred eighty-nine thousand, four hundred twelve".