549239040 has 432 divisors, whose sum is σ = 2232048000. Its totient is φ = 124637184.

The previous prime is 549239029. The next prime is 549239081. The reversal of 549239040 is 40932945.

549239040 is a `hidden beast` number, since 549 + 23 + 90 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 549238986 and 549239004.

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 47 ways as a sum of consecutive naturals, for example, 3951291 + ... + 3951429.

Almost surely, 2^549239040 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 549239040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116024000).

549239040 is an abundant number, since it is smaller than the sum of its proper divisors (1682808960).

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

549239040 is a wasteful number, since it uses less digits than its factorization.

549239040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 549239040 is about 23435.8494618821. The cubic root of 549239040 is about 818.9432351628.

The spelling of 549239040 in words is "five hundred forty-nine million, two hundred thirty-nine thousand, forty".