4450043440 has 80 divisors (see below), whose sum is σ = 10451402496. Its totient is φ = 1762041600.

The previous prime is 4450043419. The next prime is 4450043449. The reversal of 4450043440 is 443400544.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 4450043399 and 4450043408.

It is not an unprimeable number, because it can be changed into a prime (4450043449) 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 15 ways as a sum of consecutive naturals, for example, 4315725 + ... + 4316755.

Almost surely, 2^4450043440 is an apocalyptic number.

4450043440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4450043440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5225701248).

4450043440 is an abundant number, since it is smaller than the sum of its proper divisors (6001359056).

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

4450043440 is a wasteful number, since it uses less digits than its factorization.

4450043440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 4450043440 is about 66708.6459164028. The cubic root of 4450043440 is about 1644.8315086894.

Adding to 4450043440 its reverse (443400544), we get a palindrome (4893443984).

The spelling of 4450043440 in words is "four billion, four hundred fifty million, forty-three thousand, four hundred forty".