199317924 has 81 divisors (see below), whose sum is σ = 548599779. Its totient is φ = 60989760.

The previous prime is 199317919. The next prime is 199317953. The reversal of 199317924 is 429713991.

The square root of 199317924 is 14118.

It is a perfect power (a square), and thus also a powerful number.

199317924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 153512100 + 45805824 = 12390^2 + 6768^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 199317924.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1101114 + ... + 1101294.

Almost surely, 2^199317924 is an apocalyptic number.

199317924 is the 14118-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199317924

199317924 is an abundant number, since it is smaller than the sum of its proper divisors (349281855).

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

199317924 is a wasteful number, since it uses less digits than its factorization.

199317924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 199 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The cubic root of 199317924 is about 584.1379896921.

The spelling of 199317924 in words is "one hundred ninety-nine million, three hundred seventeen thousand, nine hundred twenty-four".