199880273 has 2 divisors, whose sum is σ = 199880274. Its totient is φ = 199880272.

The previous prime is 199880269. The next prime is 199880279. The reversal of 199880273 is 372088991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162511504 + 37368769 = 12748^2 + 6113^2 .

It is a cyclic number.

It is not a de Polignac number, because 199880273 - 2² = 199880269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (199880279) 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, 99940136 + 99940137.

It is an arithmetic number, because the mean of its divisors is an integer number (99940137).

Almost surely, 2^199880273 is an apocalyptic number.

It is an amenable number.

199880273 is a deficient number, since it is larger than the sum of its proper divisors (1).

199880273 is an equidigital number, since it uses as much as digits as its factorization.

199880273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 199880273 is about 14137.9020013579. The cubic root of 199880273 is about 584.6868297251.

The spelling of 199880273 in words is "one hundred ninety-nine million, eight hundred eighty thousand, two hundred seventy-three".