199559644 has 12 divisors (see below), whose sum is σ = 350065800. Its totient is φ = 99540848.

The previous prime is 199559599. The next prime is 199559677. The reversal of 199559644 is 446955991.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 199559591 and 199559600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57859 + ... + 61210.

It is an arithmetic number, because the mean of its divisors is an integer number (29172150).

Almost surely, 2^199559644 is an apocalyptic number.

It is an amenable number.

199559644 is a deficient number, since it is larger than the sum of its proper divisors (150506156).

199559644 is a wasteful number, since it uses less digits than its factorization.

199559644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119492 (or 119490 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 52.

The square root of 199559644 is about 14126.5581087539. The cubic root of 199559644 is about 584.3740293348.

The spelling of 199559644 in words is "one hundred ninety-nine million, five hundred fifty-nine thousand, six hundred forty-four".