2009603 has 2 divisors, whose sum is σ = 2009604. Its totient is φ = 2009602.

The previous prime is 2009593. The next prime is 2009639. The reversal of 2009603 is 3069002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2009603 - 2¹⁴ = 1993219 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2009503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004801 + 1004802.

It is an arithmetic number, because the mean of its divisors is an integer number (1004802).

2^2009603 is an apocalyptic number.

2009603 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009603 is an equidigital number, since it uses as much as digits as its factorization.

2009603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2009603 is about 1417.6046698569. The cubic root of 2009603 is about 126.1934334703.

The spelling of 2009603 in words is "two million, nine thousand, six hundred three".