134909 has 2 divisors, whose sum is σ = 134910. Its totient is φ = 134908.

The previous prime is 134887. The next prime is 134917. The reversal of 134909 is 909431.

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., 96100 + 38809 = 310^2 + 197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134909 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 (134989) 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, 67454 + 67455.

It is an arithmetic number, because the mean of its divisors is an integer number (67455).

2¹³⁴⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

134909 is a deficient number, since it is larger than the sum of its proper divisors (1).

134909 is an equidigital number, since it uses as much as digits as its factorization.

134909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 134909 is about 367.2996052271. The cubic root of 134909 is about 51.2877493049.

The spelling of 134909 in words is "one hundred thirty-four thousand, nine hundred nine".