549936 has 80 divisors (see below), whose sum is σ = 1686400. Its totient is φ = 171072.

The previous prime is 549911. The next prime is 549937. The reversal of 549936 is 639945.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 5 + 4⁷ + 9² + 9³ + 3¹² + 6⁴ .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 549936.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549936.

It is not an unprimeable number, because it can be changed into a prime (549937) 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, 8175 + ... + 8241.

It is an arithmetic number, because the mean of its divisors is an integer number (21080).

2⁵⁴⁹⁹³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843200).

549936 is an abundant number, since it is smaller than the sum of its proper divisors (1136464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549936 is a wasteful number, since it uses less digits than its factorization.

549936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 91 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 549936 is about 741.5766986631. The cubic root of 549936 is about 81.9289489634.

Subtracting 549936 from its reverse (639945), we obtain a palindrome (90009).

It can be divided in two parts, 549 and 936, that added together give a triangular number (1485 = T₅₄).

The spelling of 549936 in words is "five hundred forty-nine thousand, nine hundred thirty-six".