4421604 has 96 divisors (see below), whose sum is σ = 12418560. Its totient is φ = 1209600.

The previous prime is 4421603. The next prime is 4421617. The reversal of 4421604 is 4061244.

It is not an unprimeable number, because it can be changed into a prime (4421603) 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 31 ways as a sum of consecutive naturals, for example, 102807 + ... + 102849.

It is an arithmetic number, because the mean of its divisors is an integer number (129360).

Almost surely, 2^4421604 is an apocalyptic number.

4421604 is a gapful number since it is divisible by the number (44) 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 4421604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6209280).

4421604 is an abundant number, since it is smaller than the sum of its proper divisors (7996956).

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

4421604 is a wasteful number, since it uses less digits than its factorization.

4421604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4421604 is about 2102.7610420587. The cubic root of 4421604 is about 164.1320075366.

Adding to 4421604 its reverse (4061244), we get a palindrome (8482848).

The spelling of 4421604 in words is "four million, four hundred twenty-one thousand, six hundred four".