549089 has 2 divisors, whose sum is σ = 549090. Its totient is φ = 549088.

The previous prime is 549071. The next prime is 549091. The reversal of 549089 is 980945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478864 + 70225 = 692^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 549089 - 2⁸ = 548833 is a prime.

Together with 549091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (549019) 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, 274544 + 274545.

It is an arithmetic number, because the mean of its divisors is an integer number (274545).

2⁵⁴⁹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

549089 is a deficient number, since it is larger than the sum of its proper divisors (1).

549089 is an equidigital number, since it uses as much as digits as its factorization.

549089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 549089 is about 741.0053980910. The cubic root of 549089 is about 81.8868655957.

It can be divided in two parts, 5 and 49089, that added together give a palindrome (49094).

The spelling of 549089 in words is "five hundred forty-nine thousand, eighty-nine".