5405144440 has 128 divisors (see below), whose sum is σ = 12933043200. Its totient is φ = 2028928000.

The previous prime is 5405144401. The next prime is 5405144449. The reversal of 5405144440 is 444415045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5405144449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20551749 + ... + 20552011.

It is an arithmetic number, because the mean of its divisors is an integer number (101039400).

Almost surely, 2^5405144440 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 5405144440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6466521600).

5405144440 is an abundant number, since it is smaller than the sum of its proper divisors (7527898760).

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

5405144440 is a wasteful number, since it uses less digits than its factorization.

5405144440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 5405144440 is about 73519.6874313269. The cubic root of 5405144440 is about 1754.9675932794.

Adding to 5405144440 its reverse (444415045), we get a palindrome (5849559485).

The spelling of 5405144440 in words is "five billion, four hundred five million, one hundred forty-four thousand, four hundred forty".