199000897 has 2 divisors, whose sum is σ = 199000898. Its totient is φ = 199000896.

The previous prime is 199000831. The next prime is 199000903. The reversal of 199000897 is 798000991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126427536 + 72573361 = 11244^2 + 8519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199000897 is a prime.

It is not a weakly prime, because it can be changed into another prime (199000817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99500448 + 99500449.

It is an arithmetic number, because the mean of its divisors is an integer number (99500449).

Almost surely, 2^199000897 is an apocalyptic number.

It is an amenable number.

199000897 is a deficient number, since it is larger than the sum of its proper divisors (1).

199000897 is an equidigital number, since it uses as much as digits as its factorization.

199000897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 199000897 is about 14106.7677729521. The cubic root of 199000897 is about 583.8281232879.

The spelling of 199000897 in words is "one hundred ninety-nine million, eight hundred ninety-seven", and thus it is an aban number.