549843840 has 384 divisors, whose sum is σ = 2339064000. Its totient is φ = 115900416.

The previous prime is 549843839. The next prime is 549843841. The reversal of 549843840 is 48348945.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (549843839) and next prime (549843841).

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549843841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 523636 + ... + 524684.

Almost surely, 2^549843840 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 549843840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169532000).

549843840 is an abundant number, since it is smaller than the sum of its proper divisors (1789220160).

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

549843840 is a wasteful number, since it uses less digits than its factorization.

549843840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 549843840 is about 23448.7492203742. The cubic root of 549843840 is about 819.2437207094.

The spelling of 549843840 in words is "five hundred forty-nine million, eight hundred forty-three thousand, eight hundred forty".