549789930 has 128 divisors (see below), whose sum is σ = 1550154240. Its totient is φ = 140107968.

The previous prime is 549789887. The next prime is 549789949. The reversal of 549789930 is 39987945.

549789930 is a `hidden beast` number, since 549 + 7 + 8 + 9 + 93 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 502464 + ... + 503556.

It is an arithmetic number, because the mean of its divisors is an integer number (12110580).

Almost surely, 2^549789930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549789930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775077120).

549789930 is an abundant number, since it is smaller than the sum of its proper divisors (1000364310).

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

549789930 is a wasteful number, since it uses less digits than its factorization.

549789930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 549789930 is about 23447.5996639315. The cubic root of 549789930 is about 819.2169453056.

The spelling of 549789930 in words is "five hundred forty-nine million, seven hundred eighty-nine thousand, nine hundred thirty".