133590209 has 2 divisors, whose sum is σ = 133590210. Its totient is φ = 133590208.

The previous prime is 133590203. The next prime is 133590217. The reversal of 133590209 is 902095331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133171600 + 418609 = 11540^2 + 647^2 .

It is an emirp because it is prime and its reverse (902095331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133590209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133590203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66795104 + 66795105.

It is an arithmetic number, because the mean of its divisors is an integer number (66795105).

Almost surely, 2^133590209 is an apocalyptic number.

It is an amenable number.

133590209 is a deficient number, since it is larger than the sum of its proper divisors (1).

133590209 is an equidigital number, since it uses as much as digits as its factorization.

133590209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 133590209 is about 11558.1230742712. The cubic root of 133590209 is about 511.2008215439.

The spelling of 133590209 in words is "one hundred thirty-three million, five hundred ninety thousand, two hundred nine".