549866740 has 24 divisors (see below), whose sum is σ = 1155561120. Its totient is φ = 219786528.

The previous prime is 549866729. The next prime is 549866743. The reversal of 549866740 is 47668945.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549866743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20391 + ... + 38929.

It is an arithmetic number, because the mean of its divisors is an integer number (48148380).

Almost surely, 2^549866740 is an apocalyptic number.

It is an amenable number.

549866740 is an abundant number, since it is smaller than the sum of its proper divisors (605694380).

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

549866740 is a wasteful number, since it uses less digits than its factorization.

549866740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20031 (or 20029 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 549866740 is about 23449.2375142562. The cubic root of 549866740 is about 819.2550938905.

The spelling of 549866740 in words is "five hundred forty-nine million, eight hundred sixty-six thousand, seven hundred forty".