134866393 has 2 divisors, whose sum is σ = 134866394. Its totient is φ = 134866392.

The previous prime is 134866387. The next prime is 134866409. The reversal of 134866393 is 393668431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134861769 + 4624 = 11613^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 134866393 - 2²⁵ = 101311961 is a prime.

It is not a weakly prime, because it can be changed into another prime (134866373) 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, 67433196 + 67433197.

It is an arithmetic number, because the mean of its divisors is an integer number (67433197).

Almost surely, 2^134866393 is an apocalyptic number.

It is an amenable number.

134866393 is a deficient number, since it is larger than the sum of its proper divisors (1).

134866393 is an equidigital number, since it uses as much as digits as its factorization.

134866393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 134866393 is about 11613.1990855233. The cubic root of 134866393 is about 512.8234949905.

The spelling of 134866393 in words is "one hundred thirty-four million, eight hundred sixty-six thousand, three hundred ninety-three".