134558609 has 2 divisors, whose sum is σ = 134558610. Its totient is φ = 134558608.

The previous prime is 134558591. The next prime is 134558617. The reversal of 134558609 is 906855431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131217025 + 3341584 = 11455^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 134558609 - 2¹² = 134554513 is a prime.

It is not a weakly prime, because it can be changed into another prime (134558629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67279304 + 67279305.

It is an arithmetic number, because the mean of its divisors is an integer number (67279305).

Almost surely, 2^134558609 is an apocalyptic number.

It is an amenable number.

134558609 is a deficient number, since it is larger than the sum of its proper divisors (1).

134558609 is an equidigital number, since it uses as much as digits as its factorization.

134558609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 134558609 is about 11599.9400429485. The cubic root of 134558609 is about 512.4330861677.

The spelling of 134558609 in words is "one hundred thirty-four million, five hundred fifty-eight thousand, six hundred nine".