2006426209 has 2 divisors, whose sum is σ = 2006426210. Its totient is φ = 2006426208.

The previous prime is 2006426197. The next prime is 2006426251. The reversal of 2006426209 is 9026246002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2000593984 + 5832225 = 44728^2 + 2415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006426209 - 2¹³ = 2006418017 is a prime.

It is a super-2 number, since 2×2006426209² = 8051492264324223362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2006420209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003213104 + 1003213105.

It is an arithmetic number, because the mean of its divisors is an integer number (1003213105).

Almost surely, 2^2006426209 is an apocalyptic number.

It is an amenable number.

2006426209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006426209 is an equidigital number, since it uses as much as digits as its factorization.

2006426209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 2006426209 is about 44793.1491301962. The cubic root of 2006426209 is about 1261.2690265258.

The spelling of 2006426209 in words is "two billion, six million, four hundred twenty-six thousand, two hundred nine".