4040003 has 4 divisors (see below), whose sum is σ = 4407288. Its totient is φ = 3672720.

The previous prime is 4039991. The next prime is 4040009. The reversal of 4040003 is 3000404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4040003 - 2¹² = 4035907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11), and also a Moran number because the ratio is a prime number: 367273 = 4040003 / (4 + 0 + 4 + 0 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183626 + ... + 183647.

It is an arithmetic number, because the mean of its divisors is an integer number (1101822).

Almost surely, 2^4040003 is an apocalyptic number.

4040003 is a deficient number, since it is larger than the sum of its proper divisors (367285).

4040003 is a wasteful number, since it uses less digits than its factorization.

4040003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367284.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 4040003 is about 2009.9758705019. The cubic root of 4040003 is about 159.2675242584.

Adding to 4040003 its reverse (3000404), we get a palindrome (7040407).

The spelling of 4040003 in words is "four million, forty thousand, three".