549949 has 2 divisors, whose sum is σ = 549950. Its totient is φ = 549948.

The previous prime is 549943. The next prime is 549977. The reversal of 549949 is 949945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422500 + 127449 = 650^2 + 357^2 .

It is a cyclic number.

It is not a de Polignac number, because 549949 - 2¹¹ = 547901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274974 + 274975.

It is an arithmetic number, because the mean of its divisors is an integer number (274975).

2⁵⁴⁹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

549949 is a deficient number, since it is larger than the sum of its proper divisors (1).

549949 is an equidigital number, since it uses as much as digits as its factorization.

549949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 40.

The square root of 549949 is about 741.5854637195. The cubic root of 549949 is about 81.9295945342.

The spelling of 549949 in words is "five hundred forty-nine thousand, nine hundred forty-nine".