2003021444 has 12 divisors (see below), whose sum is σ = 3564699600. Its totient is φ = 984535848.

The previous prime is 2003021431. The next prime is 2003021479. The reversal of 2003021444 is 4441203002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4243454 + ... + 4243925.

It is an arithmetic number, because the mean of its divisors is an integer number (297058300).

Almost surely, 2^2003021444 is an apocalyptic number.

It is an amenable number.

2003021444 is a deficient number, since it is larger than the sum of its proper divisors (1561678156).

2003021444 is a wasteful number, since it uses less digits than its factorization.

2003021444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8487442 (or 8487440 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2003021444 is about 44755.1275721565. The cubic root of 2003021444 is about 1260.5551941462. Note that the first 3 decimals are identical.

Adding to 2003021444 its reverse (4441203002), we get a palindrome (6444224446).

The spelling of 2003021444 in words is "two billion, three million, twenty-one thousand, four hundred forty-four".