206549449 has 2 divisors, whose sum is σ = 206549450. Its totient is φ = 206549448.

The previous prime is 206549419. The next prime is 206549467. The reversal of 206549449 is 944945602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202863049 + 3686400 = 14243^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 206549449 - 2¹¹ = 206547401 is a prime.

It is not a weakly prime, because it can be changed into another prime (206549419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103274724 + 103274725.

It is an arithmetic number, because the mean of its divisors is an integer number (103274725).

Almost surely, 2^206549449 is an apocalyptic number.

It is an amenable number.

206549449 is a deficient number, since it is larger than the sum of its proper divisors (1).

206549449 is an equidigital number, since it uses as much as digits as its factorization.

206549449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 206549449 is about 14371.8283109700. The cubic root of 206549449 is about 591.1186752478.

It can be divided in two parts, 20654 and 9449, that multiplied together give a triangular number (195159646 = T₁₉₇₅₆).

The spelling of 206549449 in words is "two hundred six million, five hundred forty-nine thousand, four hundred forty-nine".