2003321444 has 12 divisors (see below), whose sum is σ = 3517015404. Its totient is φ = 998459904.

The previous prime is 2003321443. The next prime is 2003321447. The reversal of 2003321444 is 4441233002.

It can be written as a sum of positive squares in 2 ways, for example, as 1004129344 + 999192100 = 31688^2 + 31610^2 .

It is not an unprimeable number, because it can be changed into a prime (2003321443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798797 + ... + 801300.

It is an arithmetic number, because the mean of its divisors is an integer number (293084617).

Almost surely, 2^2003321444 is an apocalyptic number.

It is an amenable number.

2003321444 is a deficient number, since it is larger than the sum of its proper divisors (1513693960).

2003321444 is a wasteful number, since it uses less digits than its factorization.

2003321444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600414 (or 1600412 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2003321444 is about 44758.4790179470. The cubic root of 2003321444 is about 1260.6181236905.

Adding to 2003321444 its reverse (4441233002), we get a palindrome (6444554446).

The spelling of 2003321444 in words is "two billion, three million, three hundred twenty-one thousand, four hundred forty-four".