5549940 has 72 divisors (see below), whose sum is σ = 18371808. Its totient is φ = 1344960.

The previous prime is 5549927. The next prime is 5549941. The reversal of 5549940 is 499455.

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 = 5549895 and 5549904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5549941) 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, 579 + ... + 3381.

It is an arithmetic number, because the mean of its divisors is an integer number (255164).

Almost surely, 2^5549940 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 5549940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9185904).

5549940 is an abundant number, since it is smaller than the sum of its proper divisors (12821868).

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

5549940 is a wasteful number, since it uses less digits than its factorization.

5549940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829 (or 2824 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 5549940 is about 2355.8310635527. The cubic root of 5549940 is about 177.0500672306.

It can be divided in two parts, 5 and 549940, that added together give a palindrome (549945).

The spelling of 5549940 in words is "five million, five hundred forty-nine thousand, nine hundred forty".