133712009 has 2 divisors, whose sum is σ = 133712010. Its totient is φ = 133712008.

The previous prime is 133711993. The next prime is 133712017. The reversal of 133712009 is 900217331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100902025 + 32809984 = 10045^2 + 5728^2 .

It is a cyclic number.

It is not a de Polignac number, because 133712009 - 2⁴ = 133711993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133712309) 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, 66856004 + 66856005.

It is an arithmetic number, because the mean of its divisors is an integer number (66856005).

Almost surely, 2^133712009 is an apocalyptic number.

It is an amenable number.

133712009 is a deficient number, since it is larger than the sum of its proper divisors (1).

133712009 is an equidigital number, since it uses as much as digits as its factorization.

133712009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 133712009 is about 11563.3908954078. The cubic root of 133712009 is about 511.3561356873.

The spelling of 133712009 in words is "one hundred thirty-three million, seven hundred twelve thousand, nine".