549439 has 8 divisors (see below), whose sum is σ = 604800. Its totient is φ = 495000.

The previous prime is 549431. The next prime is 549443. The reversal of 549439 is 934945.

549439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 549439 - 2³ = 549431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2064 + ... + 2314.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2⁵⁴⁹⁴³⁹ is an apocalyptic number.

549439 is a deficient number, since it is larger than the sum of its proper divisors (55361).

549439 is a wasteful number, since it uses less digits than its factorization.

549439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461.

The product of its digits is 19440, while the sum is 34.

The square root of 549439 is about 741.2415260898. The cubic root of 549439 is about 81.9042606601.

The spelling of 549439 in words is "five hundred forty-nine thousand, four hundred thirty-nine".