134258609 has 2 divisors, whose sum is σ = 134258610. Its totient is φ = 134258608.

The previous prime is 134258587. The next prime is 134258623. The reversal of 134258609 is 906852431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77933584 + 56325025 = 8828^2 + 7505^2 .

It is an emirp because it is prime and its reverse (906852431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134258609 - 2⁸ = 134258353 is a prime.

It is a super-4 number, since 4×134258609⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134258669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67129304 + 67129305.

It is an arithmetic number, because the mean of its divisors is an integer number (67129305).

Almost surely, 2^134258609 is an apocalyptic number.

It is an amenable number.

134258609 is a deficient number, since it is larger than the sum of its proper divisors (1).

134258609 is an equidigital number, since it uses as much as digits as its factorization.

134258609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 134258609 is about 11587.0017260722. The cubic root of 134258609 is about 512.0519776028.

The spelling of 134258609 in words is "one hundred thirty-four million, two hundred fifty-eight thousand, six hundred nine".