136436879 has 2 divisors, whose sum is σ = 136436880. Its totient is φ = 136436878.

The previous prime is 136436869. The next prime is 136436887. The reversal of 136436879 is 978634631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136436879 - 2⁴ = 136436863 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136436869) 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, 68218439 + 68218440.

It is an arithmetic number, because the mean of its divisors is an integer number (68218440).

Almost surely, 2^136436879 is an apocalyptic number.

136436879 is a deficient number, since it is larger than the sum of its proper divisors (1).

136436879 is an equidigital number, since it uses as much as digits as its factorization.

136436879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 136436879 is about 11680.6198037604. The cubic root of 136436879 is about 514.8063858871.

The spelling of 136436879 in words is "one hundred thirty-six million, four hundred thirty-six thousand, eight hundred seventy-nine".