404028001 has 16 divisors (see below), whose sum is σ = 461462400. Its totient is φ = 350431488.

The previous prime is 404027969. The next prime is 404028013. The reversal of 404028001 is 100820404.

It is a cyclic number.

It is not a de Polignac number, because 404028001 - 2⁵ = 404027969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404028001.

It is not an unprimeable number, because it can be changed into a prime (404028061) 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 15 ways as a sum of consecutive naturals, for example, 184330 + ... + 186508.

It is an arithmetic number, because the mean of its divisors is an integer number (28841400).

Almost surely, 2^404028001 is an apocalyptic number.

It is an amenable number.

404028001 is a deficient number, since it is larger than the sum of its proper divisors (57434399).

404028001 is a wasteful number, since it uses less digits than its factorization.

404028001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 404028001 is about 20100.4477810819. The cubic root of 404028001 is about 739.2712578661.

Adding to 404028001 its reverse (100820404), we get a palindrome (504848405).

It can be divided in two parts, 4040 and 28001, that added together give a square (32041 = 179²).

The spelling of 404028001 in words is "four hundred four million, twenty-eight thousand, one".