134807789 has 2 divisors, whose sum is σ = 134807790. Its totient is φ = 134807788.

The previous prime is 134807759. The next prime is 134807791. The reversal of 134807789 is 987708431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119464900 + 15342889 = 10930^2 + 3917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134807789 is a prime.

Together with 134807791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134807719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67403894 + 67403895.

It is an arithmetic number, because the mean of its divisors is an integer number (67403895).

Almost surely, 2^134807789 is an apocalyptic number.

It is an amenable number.

134807789 is a deficient number, since it is larger than the sum of its proper divisors (1).

134807789 is an equidigital number, since it uses as much as digits as its factorization.

134807789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 134807789 is about 11610.6756478682. The cubic root of 134807789 is about 512.7492045228.

The spelling of 134807789 in words is "one hundred thirty-four million, eight hundred seven thousand, seven hundred eighty-nine".