549289 has 16 divisors (see below), whose sum is σ = 645120. Its totient is φ = 463680.

The previous prime is 549281. The next prime is 549313. The reversal of 549289 is 982945.

It is a cyclic number.

It is not a de Polignac number, because 549289 - 2³ = 549281 is a prime.

It is a Duffinian number.

Its product of digits (25920) is a multiple of the sum of its prime divisors (120).

It is the 47-th Perrin number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11664 + ... + 11710.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2⁵⁴⁹²⁸⁹ is an apocalyptic number.

It is an amenable number.

549289 is a deficient number, since it is larger than the sum of its proper divisors (95831).

549289 is a wasteful number, since it uses less digits than its factorization.

549289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120.

The product of its digits is 25920, while the sum is 37.

The square root of 549289 is about 741.1403375880. The cubic root of 549289 is about 81.8968065374.

It can be divided in two parts, 549 and 289, that added together give a palindrome (838).

The spelling of 549289 in words is "five hundred forty-nine thousand, two hundred eighty-nine".