5403440 has 40 divisors (see below), whose sum is σ = 14359200. Its totient is φ = 1852416.

The previous prime is 5403427. The next prime is 5403451. The reversal of 5403440 is 443045.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4265 + ... + 5384.

It is an arithmetic number, because the mean of its divisors is an integer number (358980).

Almost surely, 2^5403440 is an apocalyptic number.

It is an amenable number.

5403440 is an abundant number, since it is smaller than the sum of its proper divisors (8955760).

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

5403440 is a wasteful number, since it uses less digits than its factorization.

5403440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9669 (or 9663 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 5403440 is about 2324.5300600336. The cubic root of 5403440 is about 175.4783105367.

Adding to 5403440 its reverse (443045), we get a palindrome (5846485).

The spelling of 5403440 in words is "five million, four hundred three thousand, four hundred forty".