134692809 has 4 divisors (see below), whose sum is σ = 179590416. Its totient is φ = 89795204.

The previous prime is 134692793. The next prime is 134692823. The reversal of 134692809 is 908296431.

134692809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 134692809 - 2⁴ = 134692793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (134692829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22448799 + ... + 22448804.

It is an arithmetic number, because the mean of its divisors is an integer number (44897604).

Almost surely, 2^134692809 is an apocalyptic number.

It is an amenable number.

134692809 is a deficient number, since it is larger than the sum of its proper divisors (44897607).

134692809 is an equidigital number, since it uses as much as digits as its factorization.

134692809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44897606.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 134692809 is about 11605.7231140502. The cubic root of 134692809 is about 512.6033853694.

The spelling of 134692809 in words is "one hundred thirty-four million, six hundred ninety-two thousand, eight hundred nine".