199800449 has 2 divisors, whose sum is σ = 199800450. Its totient is φ = 199800448.

The previous prime is 199800443. The next prime is 199800463. The reversal of 199800449 is 944008991.

199800449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199713424 + 87025 = 14132^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 199800449 - 2²⁴ = 183023233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199800443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99900224 + 99900225.

It is an arithmetic number, because the mean of its divisors is an integer number (99900225).

Almost surely, 2^199800449 is an apocalyptic number.

It is an amenable number.

199800449 is a deficient number, since it is larger than the sum of its proper divisors (1).

199800449 is an equidigital number, since it uses as much as digits as its factorization.

199800449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 199800449 is about 14135.0786697492. The cubic root of 199800449 is about 584.6089860321.

The spelling of 199800449 in words is "one hundred ninety-nine million, eight hundred thousand, four hundred forty-nine".