134106809 has 4 divisors (see below), whose sum is σ = 137225616. Its totient is φ = 130988004.

The previous prime is 134106803. The next prime is 134106827. The reversal of 134106809 is 908601431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 908601431 = 17 ⋅53447143.

It is a cyclic number.

It is not a de Polignac number, because 134106809 - 2¹² = 134102713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134106803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559339 + ... + 1559424.

It is an arithmetic number, because the mean of its divisors is an integer number (34306404).

Almost surely, 2^134106809 is an apocalyptic number.

It is an amenable number.

134106809 is a deficient number, since it is larger than the sum of its proper divisors (3118807).

134106809 is an equidigital number, since it uses as much as digits as its factorization.

134106809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118806.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 134106809 is about 11580.4494299660. The cubic root of 134106809 is about 511.8589203276.

The spelling of 134106809 in words is "one hundred thirty-four million, one hundred six thousand, eight hundred nine".