549044400 has 120 divisors (see below), whose sum is σ = 1774774800. Its totient is φ = 145080320.

The previous prime is 549044399. The next prime is 549044417. The reversal of 549044400 is 4440945.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133576 + ... + 137624.

It is an arithmetic number, because the mean of its divisors is an integer number (14789790).

Almost surely, 2^549044400 is an apocalyptic number.

549044400 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 549044400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (887387400).

549044400 is an abundant number, since it is smaller than the sum of its proper divisors (1225730400).

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

549044400 is a wasteful number, since it uses less digits than its factorization.

549044400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183 (or 4172 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 549044400 is about 23431.6964814757. The cubic root of 549044400 is about 818.8464843660.

The spelling of 549044400 in words is "five hundred forty-nine million, forty-four thousand, four hundred".