136065439 has 4 divisors (see below), whose sum is σ = 136090656. Its totient is φ = 136040224.

The previous prime is 136065437. The next prime is 136065443. The reversal of 136065439 is 934560631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934560631 = 149 ⋅6272219.

It is a cyclic number.

It is not a de Polignac number, because 136065439 - 2¹ = 136065437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136065398 and 136065407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136065431) 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 in 3 ways as a sum of consecutive naturals, for example, 874 + ... + 16519.

It is an arithmetic number, because the mean of its divisors is an integer number (34022664).

Almost surely, 2^136065439 is an apocalyptic number.

136065439 is a deficient number, since it is larger than the sum of its proper divisors (25217).

136065439 is an equidigital number, since it uses as much as digits as its factorization.

136065439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25216.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 136065439 is about 11664.7091262491. The cubic root of 136065439 is about 514.3387863256.

The spelling of 136065439 in words is "one hundred thirty-six million, sixty-five thousand, four hundred thirty-nine".