4421603 has 2 divisors, whose sum is σ = 4421604. Its totient is φ = 4421602.

The previous prime is 4421597. The next prime is 4421617. The reversal of 4421603 is 3061244.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4421603 - 2⁴ = 4421587 is a prime.

It is a Chen prime.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (4421633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210801 + 2210802.

It is an arithmetic number, because the mean of its divisors is an integer number (2210802).

Almost surely, 2^4421603 is an apocalyptic number.

4421603 is a deficient number, since it is larger than the sum of its proper divisors (1).

4421603 is an equidigital number, since it uses as much as digits as its factorization.

4421603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4421603 is about 2102.7608042761. The cubic root of 4421603 is about 164.1319951631.

Adding to 4421603 its reverse (3061244), we get a palindrome (7482847).

The spelling of 4421603 in words is "four million, four hundred twenty-one thousand, six hundred three".