199447968 has 24 divisors (see below), whose sum is σ = 523551168. Its totient is φ = 66482624.

The previous prime is 199447967. The next prime is 199447987. The reversal of 199447968 is 869744991.

199447968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (199447967) 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, 1038696 + ... + 1038887.

It is an arithmetic number, because the mean of its divisors is an integer number (21814632).

Almost surely, 2^199447968 is an apocalyptic number.

It is an amenable number.

199447968 is an abundant number, since it is smaller than the sum of its proper divisors (324103200).

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

199447968 is a wasteful number, since it uses less digits than its factorization.

199447968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077596 (or 2077588 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 57.

The square root of 199447968 is about 14122.6048588778. The cubic root of 199447968 is about 584.2650013936.

The spelling of 199447968 in words is "one hundred ninety-nine million, four hundred forty-seven thousand, nine hundred sixty-eight".