2009385 has 24 divisors (see below), whose sum is σ = 3981120. Its totient is φ = 918432.

The previous prime is 2009377. The next prime is 2009387. The reversal of 2009385 is 5839002.

It is not a de Polignac number, because 2009385 - 2³ = 2009377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2009387) 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 23 ways as a sum of consecutive naturals, for example, 2875 + ... + 3504.

It is an arithmetic number, because the mean of its divisors is an integer number (165880).

2^2009385 is an apocalyptic number.

It is an amenable number.

2009385 is a deficient number, since it is larger than the sum of its proper divisors (1971735).

2009385 is a wasteful number, since it uses less digits than its factorization.

2009385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6397 (or 6394 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2009385 is about 1417.5277775056. The cubic root of 2009385 is about 126.1888701870.

The spelling of 2009385 in words is "two million, nine thousand, three hundred eighty-five".