11004003 has 6 divisors (see below), whose sum is σ = 15894684. Its totient is φ = 7335996.

The previous prime is 11003957. The next prime is 11004017. The reversal of 11004003 is 30040011.

It is not a de Polignac number, because 11004003 - 2⁶ = 11003939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1222667 = 11004003 / (1 + 1 + 0 + 0 + 4 + 0 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (11004023) 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 5 ways as a sum of consecutive naturals, for example, 611325 + ... + 611342.

It is an arithmetic number, because the mean of its divisors is an integer number (2649114).

Almost surely, 2^11004003 is an apocalyptic number.

11004003 is a deficient number, since it is larger than the sum of its proper divisors (4890681).

11004003 is a wasteful number, since it uses less digits than its factorization.

11004003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222673 (or 1222670 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 11004003 is about 3317.2282104191. The cubic root of 11004003 is about 222.4249833376.

Adding to 11004003 its reverse (30040011), we get a palindrome (41044014).

It can be divided in two parts, 1 and 1004003, that added together give a square (1004004 = 1002²).

The spelling of 11004003 in words is "eleven million, four thousand, three".