134850509 has 2 divisors, whose sum is σ = 134850510. Its totient is φ = 134850508.

The previous prime is 134850487. The next prime is 134850523. The reversal of 134850509 is 905058431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134629609 + 220900 = 11603^2 + 470^2 .

It is an emirp because it is prime and its reverse (905058431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134850509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134850539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67425254 + 67425255.

It is an arithmetic number, because the mean of its divisors is an integer number (67425255).

Almost surely, 2^134850509 is an apocalyptic number.

It is an amenable number.

134850509 is a deficient number, since it is larger than the sum of its proper divisors (1).

134850509 is an equidigital number, since it uses as much as digits as its factorization.

134850509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 134850509 is about 11612.5151883647. The cubic root of 134850509 is about 512.8033614642.

The spelling of 134850509 in words is "one hundred thirty-four million, eight hundred fifty thousand, five hundred nine".