199959641 has 12 divisors (see below), whose sum is σ = 240111360. Its totient is φ = 165863880.

The previous prime is 199959623. The next prime is 199959653. The reversal of 199959641 is 146959991.

It is not a de Polignac number, because 199959641 - 2⁶ = 199959577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199959041) 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, 64301 + ... + 67338.

It is an arithmetic number, because the mean of its divisors is an integer number (20009280).

Almost surely, 2^199959641 is an apocalyptic number.

It is an amenable number.

199959641 is a deficient number, since it is larger than the sum of its proper divisors (40151719).

199959641 is a wasteful number, since it uses less digits than its factorization.

199959641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131684 (or 131677 counting only the distinct ones).

The product of its digits is 787320, while the sum is 53.

The square root of 199959641 is about 14140.7086456090. The cubic root of 199959641 is about 584.7642081857.

The spelling of 199959641 in words is "one hundred ninety-nine million, nine hundred fifty-nine thousand, six hundred forty-one".