199471841 has 2 divisors, whose sum is σ = 199471842. Its totient is φ = 199471840.

The previous prime is 199471837. The next prime is 199471903. The reversal of 199471841 is 148174991.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198669025 + 802816 = 14095^2 + 896^2 .

It is a cyclic number.

It is not a de Polignac number, because 199471841 - 2² = 199471837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199471792 and 199471801.

It is not a weakly prime, because it can be changed into another prime (199471141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99735920 + 99735921.

It is an arithmetic number, because the mean of its divisors is an integer number (99735921).

Almost surely, 2^199471841 is an apocalyptic number.

It is an amenable number.

199471841 is a deficient number, since it is larger than the sum of its proper divisors (1).

199471841 is an equidigital number, since it uses as much as digits as its factorization.

199471841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 44.

The square root of 199471841 is about 14123.4500388538. The cubic root of 199471841 is about 584.2883117371.

The spelling of 199471841 in words is "one hundred ninety-nine million, four hundred seventy-one thousand, eight hundred forty-one".