549189 has 12 divisors (see below), whose sum is σ = 800800. Its totient is φ = 362664.

The previous prime is 549169. The next prime is 549193. The reversal of 549189 is 981945.

It is not a de Polignac number, because 549189 - 2⁹ = 548677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549139) 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 in 11 ways as a sum of consecutive naturals, for example, 1032 + ... + 1470.

2⁵⁴⁹¹⁸⁹ is an apocalyptic number.

It is an amenable number.

549189 is a deficient number, since it is larger than the sum of its proper divisors (251611).

549189 is a wasteful number, since it uses less digits than its factorization.

549189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 581 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 549189 is about 741.0728709108. The cubic root of 549189 is about 81.8918363682.

It can be divided in two parts, 5 and 49189, that added together give a palindrome (49194).

The spelling of 549189 in words is "five hundred forty-nine thousand, one hundred eighty-nine".