199889384 has 16 divisors (see below), whose sum is σ = 375144900. Its totient is φ = 99850752.

The previous prime is 199889381. The next prime is 199889387. The reversal of 199889384 is 483988991.

199889384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (199889381) and next prime (199889387).

It can be written as a sum of positive squares in 2 ways, for example, as 181656484 + 18232900 = 13478^2 + 4270^2 .

It is not an unprimeable number, because it can be changed into a prime (199889381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2249 + ... + 20120.

Almost surely, 2^199889384 is an apocalyptic number.

It is an amenable number.

199889384 is a deficient number, since it is larger than the sum of its proper divisors (175255516).

199889384 is a wasteful number, since it uses less digits than its factorization.

199889384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23492 (or 23488 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 59.

The square root of 199889384 is about 14138.2242166405. The cubic root of 199889384 is about 584.6957133778.

The spelling of 199889384 in words is "one hundred ninety-nine million, eight hundred eighty-nine thousand, three hundred eighty-four".