199899448 has 16 divisors (see below), whose sum is σ = 428356080. Its totient is φ = 85671168.

The previous prime is 199899431. The next prime is 199899449. The reversal of 199899448 is 844998991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199899449) 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, 1784761 + ... + 1784872.

It is an arithmetic number, because the mean of its divisors is an integer number (26772255).

Almost surely, 2^199899448 is an apocalyptic number.

It is an amenable number.

199899448 is an abundant number, since it is smaller than the sum of its proper divisors (228456632).

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

199899448 is a wasteful number, since it uses less digits than its factorization.

199899448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569646 (or 3569642 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 61.

The square root of 199899448 is about 14138.5801267313. The cubic root of 199899448 is about 584.7055259364.

The spelling of 199899448 in words is "one hundred ninety-nine million, eight hundred ninety-nine thousand, four hundred forty-eight".