549449 has 2 divisors, whose sum is σ = 549450. Its totient is φ = 549448.

The previous prime is 549443. The next prime is 549481. The reversal of 549449 is 944945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 547600 + 1849 = 740^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 549449 - 2⁸ = 549193 is a prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (549443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274724 + 274725.

It is an arithmetic number, because the mean of its divisors is an integer number (274725).

2⁵⁴⁹⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

549449 is a deficient number, since it is larger than the sum of its proper divisors (1).

549449 is an equidigital number, since it uses as much as digits as its factorization.

549449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 549449 is about 741.2482714988. The cubic root of 549449 is about 81.9047575534.

The spelling of 549449 in words is "five hundred forty-nine thousand, four hundred forty-nine".