1009003 has 4 divisors (see below), whose sum is σ = 1011880. Its totient is φ = 1006128.

The previous prime is 1008991. The next prime is 1009007. The reversal of 1009003 is 3009001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3009001 = 89 ⋅33809.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1009003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1009007) 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 3 ways as a sum of consecutive naturals, for example, 825 + ... + 1642.

It is an arithmetic number, because the mean of its divisors is an integer number (252970).

2^1009003 is an apocalyptic number.

1009003 is a deficient number, since it is larger than the sum of its proper divisors (2877).

1009003 is an equidigital number, since it uses as much as digits as its factorization.

1009003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 1009003 is about 1004.4914136019. The cubic root of 1009003 is about 100.2992038775.

The spelling of 1009003 in words is "one million, nine thousand, three".