199887441 has 8 divisors (see below), whose sum is σ = 287017920. Its totient is φ = 123007632.

The previous prime is 199887439. The next prime is 199887451. The reversal of 199887441 is 144788991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199887441 - 2¹ = 199887439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199887451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2562621 + ... + 2562698.

It is an arithmetic number, because the mean of its divisors is an integer number (35877240).

Almost surely, 2^199887441 is an apocalyptic number.

It is an amenable number.

199887441 is a deficient number, since it is larger than the sum of its proper divisors (87130479).

199887441 is a wasteful number, since it uses less digits than its factorization.

199887441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5125335.

The product of its digits is 580608, while the sum is 51.

The square root of 199887441 is about 14138.1555020448. The cubic root of 199887441 is about 584.6938188842.

The spelling of 199887441 in words is "one hundred ninety-nine million, eight hundred eighty-seven thousand, four hundred forty-one".