549869382 has 48 divisors (see below), whose sum is σ = 1253086848. Its totient is φ = 174021120.

The previous prime is 549869347. The next prime is 549869389. The reversal of 549869382 is 283968945.

549869382 is a `hidden beast` number, since 549 + 8 + 6 + 93 + 8 + 2 = 666.

It is a super-2 number, since 2×549869382² = 604712674522123848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549869389) 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 23 ways as a sum of consecutive naturals, for example, 20278 + ... + 38870.

It is an arithmetic number, because the mean of its divisors is an integer number (26105976).

Almost surely, 2^549869382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549869382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626543424).

549869382 is an abundant number, since it is smaller than the sum of its proper divisors (703217466).

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

549869382 is a wasteful number, since it uses less digits than its factorization.

549869382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18685 (or 18682 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 549869382 is about 23449.2938486429. The cubic root of 549869382 is about 819.2564060075.

The spelling of 549869382 in words is "five hundred forty-nine million, eight hundred sixty-nine thousand, three hundred eighty-two".