134789791 has 4 divisors (see below), whose sum is σ = 134875584. Its totient is φ = 134704000.

The previous prime is 134789783. The next prime is 134789797. The reversal of 134789791 is 197987431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197987431 = 6577 ⋅30103.

It is a cyclic number.

It is not a de Polignac number, because 134789791 - 2³ = 134789783 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 (134789797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40495 + ... + 43696.

It is an arithmetic number, because the mean of its divisors is an integer number (33718896).

Almost surely, 2^134789791 is an apocalyptic number.

134789791 is a deficient number, since it is larger than the sum of its proper divisors (85793).

134789791 is an equidigital number, since it uses as much as digits as its factorization.

134789791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85792.

The product of its digits is 381024, while the sum is 49.

The square root of 134789791 is about 11609.9005594363. The cubic root of 134789791 is about 512.7263846967.

The spelling of 134789791 in words is "one hundred thirty-four million, seven hundred eighty-nine thousand, seven hundred ninety-one".