134609309 has 2 divisors, whose sum is σ = 134609310. Its totient is φ = 134609308.

The previous prime is 134609303. The next prime is 134609327. The reversal of 134609309 is 903906431.

134609309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95609284 + 39000025 = 9778^2 + 6245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134609309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134609303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67304654 + 67304655.

It is an arithmetic number, because the mean of its divisors is an integer number (67304655).

Almost surely, 2^134609309 is an apocalyptic number.

It is an amenable number.

134609309 is a deficient number, since it is larger than the sum of its proper divisors (1).

134609309 is an equidigital number, since it uses as much as digits as its factorization.

134609309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 134609309 is about 11602.1251932566. The cubic root of 134609309 is about 512.4974375442.

The spelling of 134609309 in words is "one hundred thirty-four million, six hundred nine thousand, three hundred nine".