2001404044 has 12 divisors (see below), whose sum is σ = 3503554600. Its totient is φ = 1000388448.

The previous prime is 2001404011. The next prime is 2001404047. The reversal of 2001404044 is 4404041002.

It is not an unprimeable number, because it can be changed into a prime (2001404047) 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 3 ways as a sum of consecutive naturals, for example, 63729 + ... + 89800.

Almost surely, 2^2001404044 is an apocalyptic number.

It is an amenable number.

2001404044 is a deficient number, since it is larger than the sum of its proper divisors (1502150556).

2001404044 is a wasteful number, since it uses less digits than its factorization.

2001404044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156792 (or 156790 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2001404044 is about 44737.0544850686. The cubic root of 2001404044 is about 1260.2158116943.

Adding to 2001404044 its reverse (4404041002), we get a palindrome (6405445046).

The spelling of 2001404044 in words is "two billion, one million, four hundred four thousand, forty-four".