549400 has 48 divisors (see below), whose sum is σ = 1328040. Its totient is φ = 211200.

The previous prime is 549391. The next prime is 549403. The reversal of 549400 is 4945.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549403) by changing a digit.

549400 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8167 + ... + 8233.

2⁵⁴⁹⁴⁰⁰ is an apocalyptic number.

549400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664020).

549400 is an abundant number, since it is smaller than the sum of its proper divisors (778640).

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

549400 is a wasteful number, since it uses less digits than its factorization.

549400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 549400 is about 741.2152184083. The cubic root of 549400 is about 81.9023227187.

It can be divided in two parts, 549 and 400, that added together give a palindrome (949).

The spelling of 549400 in words is "five hundred forty-nine thousand, four hundred".