2006009 has 2 divisors, whose sum is σ = 2006010. Its totient is φ = 2006008.

The previous prime is 2005981. The next prime is 2006021. The reversal of 2006009 is 9006002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1006009 + 1000000 = 1003^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006009 - 2¹⁶ = 1940473 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2002009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003004 + 1003005.

It is an arithmetic number, because the mean of its divisors is an integer number (1003005).

2^2006009 is an apocalyptic number.

It is an amenable number.

2006009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006009 is an equidigital number, since it uses as much as digits as its factorization.

2006009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2006009 is about 1416.3364713231. The cubic root of 2006009 is about 126.1181599228.

The spelling of 2006009 in words is "two million, six thousand, nine".