4404421504 has 64 divisors (see below), whose sum is σ = 10049040000. Its totient is φ = 1883635200.

The previous prime is 4404421367. The next prime is 4404421507. The reversal of 4404421504 is 4051244044.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4404421507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442179 + ... + 452029.

It is an arithmetic number, because the mean of its divisors is an integer number (157016250).

Almost surely, 2^4404421504 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 4404421504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5024520000).

4404421504 is an abundant number, since it is smaller than the sum of its proper divisors (5644618496).

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

4404421504 is an equidigital number, since it uses as much as digits as its factorization.

4404421504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10371 (or 10359 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 4404421504 is about 66365.8157789083. The cubic root of 4404421504 is about 1639.1912411265.

Adding to 4404421504 its reverse (4051244044), we get a palindrome (8455665548).

The spelling of 4404421504 in words is "four billion, four hundred four million, four hundred twenty-one thousand, five hundred four".