134478689 has 2 divisors, whose sum is σ = 134478690. Its totient is φ = 134478688.

The previous prime is 134478671. The next prime is 134478697. The reversal of 134478689 is 986874431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121374289 + 13104400 = 11017^2 + 3620^2 .

It is a cyclic number.

It is not a de Polignac number, because 134478689 - 2²⁴ = 117701473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134478389) 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 as a sum of consecutive naturals, namely, 67239344 + 67239345.

It is an arithmetic number, because the mean of its divisors is an integer number (67239345).

Almost surely, 2^134478689 is an apocalyptic number.

It is an amenable number.

134478689 is a deficient number, since it is larger than the sum of its proper divisors (1).

134478689 is an equidigital number, since it uses as much as digits as its factorization.

134478689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 134478689 is about 11596.4946858954. The cubic root of 134478689 is about 512.3316142434.

The spelling of 134478689 in words is "one hundred thirty-four million, four hundred seventy-eight thousand, six hundred eighty-nine".