134940509 has 32 divisors (see below), whose sum is σ = 163296000. Its totient is φ = 110064640.

The previous prime is 134940503. The next prime is 134940511. The reversal of 134940509 is 905049431.

It is a cyclic number.

It is not a de Polignac number, because 134940509 - 2¹⁶ = 134874973 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 (134940503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 807944 + ... + 808110.

It is an arithmetic number, because the mean of its divisors is an integer number (5103000).

Almost surely, 2^134940509 is an apocalyptic number.

It is an amenable number.

134940509 is a deficient number, since it is larger than the sum of its proper divisors (28355491).

134940509 is a wasteful number, since it uses less digits than its factorization.

134940509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 134940509 is about 11616.3896714943. The cubic root of 134940509 is about 512.9174187247.

The spelling of 134940509 in words is "one hundred thirty-four million, nine hundred forty thousand, five hundred nine".