135944287 has 2 divisors, whose sum is σ = 135944288. Its totient is φ = 135944286.

The previous prime is 135944267. The next prime is 135944293. The reversal of 135944287 is 782449531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135944287 - 2¹¹ = 135942239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135944267) 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, 67972143 + 67972144.

It is an arithmetic number, because the mean of its divisors is an integer number (67972144).

Almost surely, 2^135944287 is an apocalyptic number.

135944287 is a deficient number, since it is larger than the sum of its proper divisors (1).

135944287 is an equidigital number, since it uses as much as digits as its factorization.

135944287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 135944287 is about 11659.5148698391. The cubic root of 135944287 is about 514.1860860840.

The spelling of 135944287 in words is "one hundred thirty-five million, nine hundred forty-four thousand, two hundred eighty-seven".