136959289 has 2 divisors, whose sum is σ = 136959290. Its totient is φ = 136959288.

The previous prime is 136959287. The next prime is 136959307. The reversal of 136959289 is 982959631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121881600 + 15077689 = 11040^2 + 3883^2 .

It is an emirp because it is prime and its reverse (982959631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136959289 - 2¹ = 136959287 is a prime.

Together with 136959287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (136959287) 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, 68479644 + 68479645.

It is an arithmetic number, because the mean of its divisors is an integer number (68479645).

Almost surely, 2^136959289 is an apocalyptic number.

It is an amenable number.

136959289 is a deficient number, since it is larger than the sum of its proper divisors (1).

136959289 is an equidigital number, since it uses as much as digits as its factorization.

136959289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 52.

The square root of 136959289 is about 11702.9606937732. The cubic root of 136959289 is about 515.4626050406.

The spelling of 136959289 in words is "one hundred thirty-six million, nine hundred fifty-nine thousand, two hundred eighty-nine".