136559939 has 2 divisors, whose sum is σ = 136559940. Its totient is φ = 136559938.

The previous prime is 136559923. The next prime is 136559977. The reversal of 136559939 is 939955631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136559939 - 2⁴ = 136559923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136559989) 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, 68279969 + 68279970.

It is an arithmetic number, because the mean of its divisors is an integer number (68279970).

Almost surely, 2^136559939 is an apocalyptic number.

136559939 is a deficient number, since it is larger than the sum of its proper divisors (1).

136559939 is an equidigital number, since it uses as much as digits as its factorization.

136559939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 984150, while the sum is 50.

The square root of 136559939 is about 11685.8863164075. The cubic root of 136559939 is about 514.9611168683.

The spelling of 136559939 in words is "one hundred thirty-six million, five hundred fifty-nine thousand, nine hundred thirty-nine".