13147009 has 2 divisors, whose sum is σ = 13147010. Its totient is φ = 13147008.

The previous prime is 13147003. The next prime is 13147051. The reversal of 13147009 is 90074131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11242609 + 1904400 = 3353^2 + 1380^2 .

It is a cyclic number.

It is not a de Polignac number, because 13147009 - 2⁵ = 13146977 is a prime.

It is not a weakly prime, because it can be changed into another prime (13147003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6573504 + 6573505.

It is an arithmetic number, because the mean of its divisors is an integer number (6573505).

Almost surely, 2^13147009 is an apocalyptic number.

It is an amenable number.

13147009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13147009 is an equidigital number, since it uses as much as digits as its factorization.

13147009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 13147009 is about 3625.8804448023. The cubic root of 13147009 is about 236.0164751976.

The spelling of 13147009 in words is "thirteen million, one hundred forty-seven thousand, nine".