134487509 has 16 divisors (see below), whose sum is σ = 151882752. Its totient is φ = 118153728.

The previous prime is 134487461. The next prime is 134487511. The reversal of 134487509 is 905784431.

It is a cyclic number.

It is not a de Polignac number, because 134487509 - 2²⁴ = 117710293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134487589) 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 in 15 ways as a sum of consecutive naturals, for example, 65669 + ... + 67685.

It is an arithmetic number, because the mean of its divisors is an integer number (9492672).

Almost surely, 2^134487509 is an apocalyptic number.

It is an amenable number.

134487509 is a deficient number, since it is larger than the sum of its proper divisors (17395243).

134487509 is a wasteful number, since it uses less digits than its factorization.

134487509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 134487509 is about 11596.8749669900. The cubic root of 134487509 is about 512.3428146948.

The spelling of 134487509 in words is "one hundred thirty-four million, four hundred eighty-seven thousand, five hundred nine".