549889 has 4 divisors (see below), whose sum is σ = 552960. Its totient is φ = 546820.

The previous prime is 549883. The next prime is 549911. The reversal of 549889 is 988945.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 549889 - 2¹⁹ = 25601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (138240).

It is a Proth number, since it is equal to 537 ⋅ 2¹⁰ + 1 and 537 < 2¹⁰.

2⁵⁴⁹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

549889 is a deficient number, since it is larger than the sum of its proper divisors (3071).

549889 is a wasteful number, since it uses less digits than its factorization.

549889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070.

The product of its digits is 103680, while the sum is 43.

The square root of 549889 is about 741.5450087486. The cubic root of 549889 is about 81.9266148916.

It can be divided in two parts, 5 and 49889, that added together give a palindrome (49894).

The spelling of 549889 in words is "five hundred forty-nine thousand, eight hundred eighty-nine".