199880269 has 2 divisors, whose sum is σ = 199880270. Its totient is φ = 199880268.

The previous prime is 199880251. The next prime is 199880273. The reversal of 199880269 is 962088991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166668100 + 33212169 = 12910^2 + 5763^2 .

It is a cyclic number.

It is not a de Polignac number, because 199880269 - 2¹¹ = 199878221 is a prime.

It is a super-2 number, since 2×199880269² = 79904243871024722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199880279) 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, 99940134 + 99940135.

It is an arithmetic number, because the mean of its divisors is an integer number (99940135).

Almost surely, 2^199880269 is an apocalyptic number.

It is an amenable number.

199880269 is a deficient number, since it is larger than the sum of its proper divisors (1).

199880269 is an equidigital number, since it uses as much as digits as its factorization.

199880269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 52.

The square root of 199880269 is about 14137.9018598942. The cubic root of 199880269 is about 584.6868258248.

The spelling of 199880269 in words is "one hundred ninety-nine million, eight hundred eighty thousand, two hundred sixty-nine".