13406009 has 2 divisors, whose sum is σ = 13406010. Its totient is φ = 13406008.

The previous prime is 13405999. The next prime is 13406011. The reversal of 13406009 is 90060431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9517225 + 3888784 = 3085^2 + 1972^2 .

It is an emirp because it is prime and its reverse (90060431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13406009 - 2⁸ = 13405753 is a prime.

Together with 13406011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13406069) 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 as a sum of consecutive naturals, namely, 6703004 + 6703005.

It is an arithmetic number, because the mean of its divisors is an integer number (6703005).

Almost surely, 2^13406009 is an apocalyptic number.

It is an amenable number.

13406009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13406009 is an equidigital number, since it uses as much as digits as its factorization.

13406009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13406009 is about 3661.4217184039. The cubic root of 13406009 is about 237.5562725385.

The spelling of 13406009 in words is "thirteen million, four hundred six thousand, nine".