199988192 has 36 divisors (see below), whose sum is σ = 407334816. Its totient is φ = 96552960.

The previous prime is 199988179. The next prime is 199988207. The reversal of 199988192 is 291889991.

199988192 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445184 + ... + 445632.

It is an arithmetic number, because the mean of its divisors is an integer number (11314856).

Almost surely, 2^199988192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199988192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203667408).

199988192 is an abundant number, since it is smaller than the sum of its proper divisors (207346624).

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

199988192 is an frugal number, since it uses more digits than its factorization.

199988192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 482 counting only the distinct ones).

The product of its digits is 839808, while the sum is 56.

The square root of 199988192 is about 14141.7181417252. The cubic root of 199988192 is about 584.7920384823.

The spelling of 199988192 in words is "one hundred ninety-nine million, nine hundred eighty-eight thousand, one hundred ninety-two".