135893 has 2 divisors, whose sum is σ = 135894. Its totient is φ = 135892.

The previous prime is 135887. The next prime is 135899. The reversal of 135893 is 398531.

It is a balanced prime because it is at equal distance from previous prime (135887) and next prime (135899).

It can be written as a sum of positive squares in only one way, i.e., 88804 + 47089 = 298^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 135893 - 2⁶ = 135829 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67946 + 67947.

It is an arithmetic number, because the mean of its divisors is an integer number (67947).

2¹³⁵⁸⁹³ is an apocalyptic number.

It is an amenable number.

135893 is a deficient number, since it is larger than the sum of its proper divisors (1).

135893 is an equidigital number, since it uses as much as digits as its factorization.

135893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 135893 is about 368.6366775024. The cubic root of 135893 is about 51.4121416507.

The spelling of 135893 in words is "one hundred thirty-five thousand, eight hundred ninety-three".