4002003 has 12 divisors (see below), whose sum is σ = 5904288. Its totient is φ = 2610960.

The previous prime is 4002001. The next prime is 4002013. The reversal of 4002003 is 3002004.

4002003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4002003 - 2¹ = 4002001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4308 + ... + 5153.

It is an arithmetic number, because the mean of its divisors is an integer number (492024).

Almost surely, 2^4002003 is an apocalyptic number.

4002003 is a deficient number, since it is larger than the sum of its proper divisors (1902285).

4002003 is a wasteful number, since it uses less digits than its factorization.

4002003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9514 (or 9511 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 4002003 is about 2000.5006873280. The cubic root of 4002003 is about 158.7665971446.

Adding to 4002003 its reverse (3002004), we get a palindrome (7004007).

Subtracting from 4002003 its reverse (3002004), we obtain a palindrome (999999).

The spelling of 4002003 in words is "four million, two thousand, three".