199804529 has 2 divisors, whose sum is σ = 199804530. Its totient is φ = 199804528.

The previous prime is 199804469. The next prime is 199804547. The reversal of 199804529 is 925408991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107163904 + 92640625 = 10352^2 + 9625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199804529 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (199804729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99902264 + 99902265.

It is an arithmetic number, because the mean of its divisors is an integer number (99902265).

Almost surely, 2^199804529 is an apocalyptic number.

It is an amenable number.

199804529 is a deficient number, since it is larger than the sum of its proper divisors (1).

199804529 is an equidigital number, since it uses as much as digits as its factorization.

199804529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 199804529 is about 14135.2229908127. Note that the first 3 decimals coincide. The cubic root of 199804529 is about 584.6129653164.

The spelling of 199804529 in words is "one hundred ninety-nine million, eight hundred four thousand, five hundred twenty-nine".