404001003 has 48 divisors (see below), whose sum is σ = 659990016. Its totient is φ = 215191680.

The previous prime is 404000983. The next prime is 404001011. The reversal of 404001003 is 300100404.

It is not a de Polignac number, because 404001003 - 2⁶ = 404000939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404001003.

It is not an unprimeable number, because it can be changed into a prime (404001203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 455026 + ... + 455912.

It is an arithmetic number, because the mean of its divisors is an integer number (13749792).

Almost surely, 2^404001003 is an apocalyptic number.

404001003 is a deficient number, since it is larger than the sum of its proper divisors (255989013).

404001003 is a wasteful number, since it uses less digits than its factorization.

404001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 404001003 is about 20099.7761927838. The cubic root of 404001003 is about 739.2547909464.

Adding to 404001003 its reverse (300100404), we get a palindrome (704101407).

The spelling of 404001003 in words is "four hundred four million, one thousand, three".