199915792 has 60 divisors (see below), whose sum is σ = 408255120. Its totient is φ = 94815616.

The previous prime is 199915789. The next prime is 199915799. The reversal of 199915792 is 297519991.

It is a happy number.

199915792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (199915799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1116759 + ... + 1116937.

It is an arithmetic number, because the mean of its divisors is an integer number (6804252).

Almost surely, 2^199915792 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 199915792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204127560).

199915792 is an abundant number, since it is smaller than the sum of its proper divisors (208339328).

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

199915792 is a wasteful number, since it uses less digits than its factorization.

199915792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 293 counting only the distinct ones).

The product of its digits is 459270, while the sum is 52.

The square root of 199915792 is about 14139.1581078931. The cubic root of 199915792 is about 584.7214608923.

The spelling of 199915792 in words is "one hundred ninety-nine million, nine hundred fifteen thousand, seven hundred ninety-two".