2003444 has 6 divisors (see below), whose sum is σ = 3506034. Its totient is φ = 1001720.

The previous prime is 2003411. The next prime is 2003447. The reversal of 2003444 is 4443002.

It can be written as a sum of positive squares in only one way, i.e., 1123600 + 879844 = 1060^2 + 938^2 .

It is a super-2 number, since 2×2003444² = 8027575722272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250427 + ... + 250434.

It is an arithmetic number, because the mean of its divisors is an integer number (584339).

2^2003444 is an apocalyptic number.

It is an amenable number.

2003444 is a deficient number, since it is larger than the sum of its proper divisors (1502590).

2003444 is a wasteful number, since it uses less digits than its factorization.

2003444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500865 (or 500863 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 2003444 is about 1415.4306765080. The cubic root of 2003444 is about 126.0643829860.

Adding to 2003444 its reverse (4443002), we get a palindrome (6446446).

The spelling of 2003444 in words is "two million, three thousand, four hundred forty-four".