4421005440 has 128 divisors (see below), whose sum is σ = 14419944000. Its totient is φ = 1151496192.

The previous prime is 4421005429. The next prime is 4421005451. The reversal of 4421005440 is 445001244.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4421005429) and next prime (4421005451).

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-3 number, since 3×4421005440³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4421005440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55786 + ... + 109334.

Almost surely, 2^4421005440 is an apocalyptic number.

4421005440 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 4421005440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7209972000).

4421005440 is an abundant number, since it is smaller than the sum of its proper divisors (9998938560).

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

4421005440 is a wasteful number, since it uses less digits than its factorization.

4421005440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53614 (or 53602 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 4421005440 is about 66490.6417475422. The cubic root of 4421005440 is about 1641.2460092670.

Adding to 4421005440 its reverse (445001244), we get a palindrome (4866006684).

The spelling of 4421005440 in words is "four billion, four hundred twenty-one million, five thousand, four hundred forty".