2001404004 has 24 divisors (see below), whose sum is σ = 4672274880. Its totient is φ = 666801504.

The previous prime is 2001404003. The next prime is 2001404011. The reversal of 2001404004 is 4004041002.

It is not an unprimeable number, because it can be changed into a prime (2001404003) 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 7 ways as a sum of consecutive naturals, for example, 15984 + ... + 65255.

It is an arithmetic number, because the mean of its divisors is an integer number (194678120).

Almost surely, 2^2001404004 is an apocalyptic number.

It is an amenable number.

2001404004 is an abundant number, since it is smaller than the sum of its proper divisors (2670870876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001404004 is a wasteful number, since it uses less digits than its factorization.

2001404004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83299 (or 83297 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2001404004 is about 44737.0540380119. The cubic root of 2001404004 is about 1260.2158032988.

Adding to 2001404004 its reverse (4004041002), we get a palindrome (6005445006).

The spelling of 2001404004 in words is "two billion, one million, four hundred four thousand, four".