134809917 has 16 divisors (see below), whose sum is σ = 202414080. Its totient is φ = 79066800.

The previous prime is 134809889. The next prime is 134809919. The reversal of 134809917 is 719908431.

It is a happy number.

It is not a de Polignac number, because 134809917 - 2⁶ = 134809853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134809919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64867 + ... + 66912.

It is an arithmetic number, because the mean of its divisors is an integer number (12650880).

Almost surely, 2^134809917 is an apocalyptic number.

It is an amenable number.

134809917 is a deficient number, since it is larger than the sum of its proper divisors (67604163).

134809917 is a wasteful number, since it uses less digits than its factorization.

134809917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131824.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 134809917 is about 11610.7672873071. The cubic root of 134809917 is about 512.7519024989.

The spelling of 134809917 in words is "one hundred thirty-four million, eight hundred nine thousand, nine hundred seventeen".