199245289 has 2 divisors, whose sum is σ = 199245290. Its totient is φ = 199245288.

The previous prime is 199245257. The next prime is 199245313. The reversal of 199245289 is 982542991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135373225 + 63872064 = 11635^2 + 7992^2 .

It is a cyclic number.

It is not a de Polignac number, because 199245289 - 2⁵ = 199245257 is a prime.

It is not a weakly prime, because it can be changed into another prime (199245239) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99622644 + 99622645.

It is an arithmetic number, because the mean of its divisors is an integer number (99622645).

Almost surely, 2^199245289 is an apocalyptic number.

It is an amenable number.

199245289 is a deficient number, since it is larger than the sum of its proper divisors (1).

199245289 is an equidigital number, since it uses as much as digits as its factorization.

199245289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 49.

The square root of 199245289 is about 14115.4273403252. The cubic root of 199245289 is about 584.0670243100.

The spelling of 199245289 in words is "one hundred ninety-nine million, two hundred forty-five thousand, two hundred eighty-nine".