199448269 has 2 divisors, whose sum is σ = 199448270. Its totient is φ = 199448268.

The previous prime is 199448257. The next prime is 199448279. The reversal of 199448269 is 962844991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169963369 + 29484900 = 13037^2 + 5430^2 .

It is a cyclic number.

It is not a de Polignac number, because 199448269 - 2¹⁹ = 198923981 is a prime.

It is a super-2 number, since 2×199448269² = 79559224014192722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199448209) 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, 99724134 + 99724135.

It is an arithmetic number, because the mean of its divisors is an integer number (99724135).

Almost surely, 2^199448269 is an apocalyptic number.

It is an amenable number.

199448269 is a deficient number, since it is larger than the sum of its proper divisors (1).

199448269 is an equidigital number, since it uses as much as digits as its factorization.

199448269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 52.

The square root of 199448269 is about 14122.6155155481. The cubic root of 199448269 is about 584.2652953110.

The spelling of 199448269 in words is "one hundred ninety-nine million, four hundred forty-eight thousand, two hundred sixty-nine".