2012004009 has 16 divisors (see below), whose sum is σ = 3156085440. Its totient is φ = 1262433600.

The previous prime is 2012003989. The next prime is 2012004023. The reversal of 2012004009 is 9004002102.

It is not a de Polignac number, because 2012004009 - 2¹¹ = 2012001961 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2012003982 and 2012004000.

It is not an unprimeable number, because it can be changed into a prime (2012004089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2191267 + ... + 2192184.

It is an arithmetic number, because the mean of its divisors is an integer number (197255340).

Almost surely, 2^2012004009 is an apocalyptic number.

It is an amenable number.

2012004009 is a deficient number, since it is larger than the sum of its proper divisors (1144081431).

2012004009 is a wasteful number, since it uses less digits than its factorization.

2012004009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383477 (or 4383471 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2012004009 is about 44855.3676721081. The cubic root of 2012004009 is about 1262.4367075286.

It can be divided in two parts, 201200 and 4009, that added together give a square (205209 = 453²).

The spelling of 2012004009 in words is "two billion, twelve million, four thousand, nine".