199559461 has 2 divisors, whose sum is σ = 199559462. Its totient is φ = 199559460.

The previous prime is 199559453. The next prime is 199559467. The reversal of 199559461 is 164955991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113422500 + 86136961 = 10650^2 + 9281^2 .

It is a cyclic number.

It is not a de Polignac number, because 199559461 - 2³ = 199559453 is a prime.

It is a super-2 number, since 2×199559461² = 79647956949221042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199559467) 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, 99779730 + 99779731.

It is an arithmetic number, because the mean of its divisors is an integer number (99779731).

Almost surely, 2^199559461 is an apocalyptic number.

It is an amenable number.

199559461 is a deficient number, since it is larger than the sum of its proper divisors (1).

199559461 is an equidigital number, since it uses as much as digits as its factorization.

199559461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 437400, while the sum is 49.

The square root of 199559461 is about 14126.5516315908. The cubic root of 199559461 is about 584.3738507074.

The spelling of 199559461 in words is "one hundred ninety-nine million, five hundred fifty-nine thousand, four hundred sixty-one".