5509440 has 84 divisors (see below), whose sum is σ = 18960084. Its totient is φ = 1468416.

The previous prime is 5509433. The next prime is 5509451. The reversal of 5509440 is 449055.

It can be written as a sum of positive squares in 2 ways, for example, as 3504384 + 2005056 = 1872^2 + 1416^2 .

It is a super-2 number, since 2×5509440² = 60707858227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1924 + ... + 3836.

Almost surely, 2^5509440 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 5509440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9480042).

5509440 is an abundant number, since it is smaller than the sum of its proper divisors (13450644).

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

5509440 is a wasteful number, since it uses less digits than its factorization.

5509440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936 (or 1923 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 5509440 is about 2347.2196318197. The cubic root of 5509440 is about 176.6183484016.

The spelling of 5509440 in words is "five million, five hundred nine thousand, four hundred forty".