549874440 has 256 divisors, whose sum is σ = 1953792000. Its totient is φ = 137168640.

The previous prime is 549874433. The next prime is 549874453. The reversal of 549874440 is 44478945.

549874440 is a `hidden beast` number, since 54 + 98 + 74 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 63 ways as a sum of consecutive naturals, for example, 2605935 + ... + 2606145.

It is an arithmetic number, because the mean of its divisors is an integer number (7632000).

Almost surely, 2^549874440 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 549874440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976896000).

549874440 is an abundant number, since it is smaller than the sum of its proper divisors (1403917560).

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

549874440 is a wasteful number, since it uses less digits than its factorization.

549874440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 549874440 is about 23449.4016981244. The cubic root of 549874440 is about 819.2589179897.

The spelling of 549874440 in words is "five hundred forty-nine million, eight hundred seventy-four thousand, four hundred forty".