2009009 has 8 divisors (see below), whose sum is σ = 2164320. Its totient is φ = 1857856.

The previous prime is 2008973. The next prime is 2009011. The reversal of 2009009 is 9009002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2009009 is a prime.

It is a super-2 number, since 2×2009009² = 8072234324162, which contains 22 as substring.

It is a Duffinian number.

2009009 is a modest number, since divided by 9009 gives 2 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2009039) 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 7 ways as a sum of consecutive naturals, for example, 2 + ... + 2004.

It is an arithmetic number, because the mean of its divisors is an integer number (270540).

2^2009009 is an apocalyptic number.

It is an amenable number.

2009009 is a deficient number, since it is larger than the sum of its proper divisors (155311).

2009009 is a wasteful number, since it uses less digits than its factorization.

2009009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 2009009 is about 1417.3951460337. The cubic root of 2009009 is about 126.1809987944.

The spelling of 2009009 in words is "two million, nine thousand, nine".