135549289 has 2 divisors, whose sum is σ = 135549290. Its totient is φ = 135549288.

The previous prime is 135549283. The next prime is 135549301. The reversal of 135549289 is 982945531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132434064 + 3115225 = 11508^2 + 1765^2 .

It is a cyclic number.

It is not a de Polignac number, because 135549289 - 2¹¹ = 135547241 is a prime.

It is not a weakly prime, because it can be changed into another prime (135549283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67774644 + 67774645.

It is an arithmetic number, because the mean of its divisors is an integer number (67774645).

Almost surely, 2^135549289 is an apocalyptic number.

It is an amenable number.

135549289 is a deficient number, since it is larger than the sum of its proper divisors (1).

135549289 is an equidigital number, since it uses as much as digits as its factorization.

135549289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 46.

The square root of 135549289 is about 11642.5636781595. The cubic root of 135549289 is about 513.6875987773.

The spelling of 135549289 in words is "one hundred thirty-five million, five hundred forty-nine thousand, two hundred eighty-nine".