549869616 has 120 divisors (see below), whose sum is σ = 1592107920. Its totient is φ = 177062400.

The previous prime is 549869597. The next prime is 549869627. The reversal of 549869616 is 616968945.

It is a happy number.

549869616 is a `hidden beast` number, since 549 + 8 + 6 + 96 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 517726 + ... + 518786.

It is an arithmetic number, because the mean of its divisors is an integer number (13267566).

Almost surely, 2^549869616 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 549869616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796053960).

549869616 is an abundant number, since it is smaller than the sum of its proper divisors (1042238304).

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

549869616 is a wasteful number, since it uses less digits than its factorization.

549869616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1186 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 549869616 is about 23449.2988381316. The cubic root of 549869616 is about 819.2565222206.

The spelling of 549869616 in words is "five hundred forty-nine million, eight hundred sixty-nine thousand, six hundred sixteen".