199856241 has 20 divisors (see below), whose sum is σ = 321517812. Its totient is φ = 122987808.

The previous prime is 199856221. The next prime is 199856249. The reversal of 199856241 is 142658991.

199856241 is a `hidden beast` number, since 19 + 9 + 8 + 5 + 624 + 1 = 666.

199856241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12960000 + 186896241 = 3600^2 + 13671^2 .

It is not a de Polignac number, because 199856241 - 2¹⁰ = 199855217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199856249) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 93846 + ... + 95951.

Almost surely, 2^199856241 is an apocalyptic number.

It is an amenable number.

199856241 is a deficient number, since it is larger than the sum of its proper divisors (121661571).

199856241 is a wasteful number, since it uses less digits than its factorization.

199856241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189822 (or 189813 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 199856241 is about 14137.0520618692. The cubic root of 199856241 is about 584.6633961018.

The spelling of 199856241 in words is "one hundred ninety-nine million, eight hundred fifty-six thousand, two hundred forty-one".