135944293 has 2 divisors, whose sum is σ = 135944294. Its totient is φ = 135944292.

The previous prime is 135944287. The next prime is 135944299. The reversal of 135944293 is 392449531.

It is a balanced prime because it is at equal distance from previous prime (135944287) and next prime (135944299).

It can be written as a sum of positive squares in only one way, i.e., 72216004 + 63728289 = 8498^2 + 7983^2 .

It is an emirp because it is prime and its reverse (392449531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135944293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135944299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67972146 + 67972147.

It is an arithmetic number, because the mean of its divisors is an integer number (67972147).

Almost surely, 2^135944293 is an apocalyptic number.

It is an amenable number.

135944293 is a deficient number, since it is larger than the sum of its proper divisors (1).

135944293 is an equidigital number, since it uses as much as digits as its factorization.

135944293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The square root of 135944293 is about 11659.5151271397. The cubic root of 135944293 is about 514.1860936486.

The spelling of 135944293 in words is "one hundred thirty-five million, nine hundred forty-four thousand, two hundred ninety-three".