199650289 has 2 divisors, whose sum is σ = 199650290. Its totient is φ = 199650288.

The previous prime is 199650259. The next prime is 199650331. The reversal of 199650289 is 982056991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168480400 + 31169889 = 12980^2 + 5583^2 .

It is a cyclic number.

It is not a de Polignac number, because 199650289 - 2¹⁵ = 199617521 is a prime.

It is not a weakly prime, because it can be changed into another prime (199650259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99825144 + 99825145.

It is an arithmetic number, because the mean of its divisors is an integer number (99825145).

Almost surely, 2^199650289 is an apocalyptic number.

It is an amenable number.

199650289 is a deficient number, since it is larger than the sum of its proper divisors (1).

199650289 is an equidigital number, since it uses as much as digits as its factorization.

199650289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 49.

The square root of 199650289 is about 14129.7660631732. The cubic root of 199650289 is about 584.4624950598.

The spelling of 199650289 in words is "one hundred ninety-nine million, six hundred fifty thousand, two hundred eighty-nine".