133808009 has 2 divisors, whose sum is σ = 133808010. Its totient is φ = 133808008.

The previous prime is 133807991. The next prime is 133808023. The reversal of 133808009 is 900808331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102414400 + 31393609 = 10120^2 + 5603^2 .

It is an emirp because it is prime and its reverse (900808331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133808009 - 2⁸ = 133807753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133808039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66904004 + 66904005.

It is an arithmetic number, because the mean of its divisors is an integer number (66904005).

Almost surely, 2^133808009 is an apocalyptic number.

It is an amenable number.

133808009 is a deficient number, since it is larger than the sum of its proper divisors (1).

133808009 is an equidigital number, since it uses as much as digits as its factorization.

133808009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 133808009 is about 11567.5411821182. The cubic root of 133808009 is about 511.4784843225.

The spelling of 133808009 in words is "one hundred thirty-three million, eight hundred eight thousand, nine".