136369939 has 2 divisors, whose sum is σ = 136369940. Its totient is φ = 136369938.

The previous prime is 136369927. The next prime is 136369943. The reversal of 136369939 is 939963631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136369939 - 2⁵ = 136369907 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136369892 and 136369901.

It is not a weakly prime, because it can be changed into another prime (136369949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68184969 + 68184970.

It is an arithmetic number, because the mean of its divisors is an integer number (68184970).

Almost surely, 2^136369939 is an apocalyptic number.

136369939 is a deficient number, since it is larger than the sum of its proper divisors (1).

136369939 is an equidigital number, since it uses as much as digits as its factorization.

136369939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 708588, while the sum is 49.

The square root of 136369939 is about 11677.7540220712. The cubic root of 136369939 is about 514.7221789944.

The spelling of 136369939 in words is "one hundred thirty-six million, three hundred sixty-nine thousand, nine hundred thirty-nine".