549943840 has 24 divisors (see below), whose sum is σ = 1299242700. Its totient is φ = 219977472.

The previous prime is 549943811. The next prime is 549943861. The reversal of 549943840 is 48349945.

It can be written as a sum of positive squares in 2 ways, for example, as 522945424 + 26998416 = 22868^2 + 5196^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1718415 + ... + 1718734.

Almost surely, 2^549943840 is an apocalyptic number.

It is an amenable number.

549943840 is an abundant number, since it is smaller than the sum of its proper divisors (749298860).

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

549943840 is a wasteful number, since it uses less digits than its factorization.

549943840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437164 (or 3437156 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 549943840 is about 23450.8814333278. The cubic root of 549943840 is about 819.2933829347.

The spelling of 549943840 in words is "five hundred forty-nine million, nine hundred forty-three thousand, eight hundred forty".