199327129 has 2 divisors, whose sum is σ = 199327130. Its totient is φ = 199327128.

The previous prime is 199327109. The next prime is 199327151. The reversal of 199327129 is 921723991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152473104 + 46854025 = 12348^2 + 6845^2 .

It is a cyclic number.

It is not a de Polignac number, because 199327129 - 2²³ = 190938521 is a prime.

It is not a weakly prime, because it can be changed into another prime (199327109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99663564 + 99663565.

It is an arithmetic number, because the mean of its divisors is an integer number (99663565).

Almost surely, 2^199327129 is an apocalyptic number.

It is an amenable number.

199327129 is a deficient number, since it is larger than the sum of its proper divisors (1).

199327129 is an equidigital number, since it uses as much as digits as its factorization.

199327129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 43.

The square root of 199327129 is about 14118.3259985028. The cubic root of 199327129 is about 584.1469818712.

The spelling of 199327129 in words is "one hundred ninety-nine million, three hundred twenty-seven thousand, one hundred twenty-nine".