134838809 has 16 divisors (see below), whose sum is σ = 159559680. Its totient is φ = 111505680.

The previous prime is 134838793. The next prime is 134838829. The reversal of 134838809 is 908838431.

It is a cyclic number.

It is not a de Polignac number, because 134838809 - 2⁴ = 134838793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134838809.

It is not an unprimeable number, because it can be changed into a prime (134838829) 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, 90182 + ... + 91664.

It is an arithmetic number, because the mean of its divisors is an integer number (9972480).

Almost surely, 2^134838809 is an apocalyptic number.

It is an amenable number.

134838809 is a deficient number, since it is larger than the sum of its proper divisors (24720871).

134838809 is a wasteful number, since it uses less digits than its factorization.

134838809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 134838809 is about 11612.0114106041. The cubic root of 134838809 is about 512.7885302933.

The spelling of 134838809 in words is "one hundred thirty-four million, eight hundred thirty-eight thousand, eight hundred nine".