135839293 has 2 divisors, whose sum is σ = 135839294. Its totient is φ = 135839292.

The previous prime is 135839281. The next prime is 135839323. The reversal of 135839293 is 392938531.

135839293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69856164 + 65983129 = 8358^2 + 8123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135839293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135839213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67919646 + 67919647.

It is an arithmetic number, because the mean of its divisors is an integer number (67919647).

Almost surely, 2^135839293 is an apocalyptic number.

It is an amenable number.

135839293 is a deficient number, since it is larger than the sum of its proper divisors (1).

135839293 is an equidigital number, since it uses as much as digits as its factorization.

135839293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 135839293 is about 11655.0114972058. The cubic root of 135839293 is about 514.0536780229.

The spelling of 135839293 in words is "one hundred thirty-five million, eight hundred thirty-nine thousand, two hundred ninety-three".