136199449 has 2 divisors, whose sum is σ = 136199450. Its totient is φ = 136199448.

The previous prime is 136199443. The next prime is 136199477. The reversal of 136199449 is 944991631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135559449 + 640000 = 11643^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 136199449 - 2¹¹ = 136197401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136199399 and 136199408.

It is not a weakly prime, because it can be changed into another prime (136199443) 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, 68099724 + 68099725.

It is an arithmetic number, because the mean of its divisors is an integer number (68099725).

Almost surely, 2^136199449 is an apocalyptic number.

It is an amenable number.

136199449 is a deficient number, since it is larger than the sum of its proper divisors (1).

136199449 is an equidigital number, since it uses as much as digits as its factorization.

136199449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 46.

The square root of 136199449 is about 11670.4519621135. The cubic root of 136199449 is about 514.5075872722.

The spelling of 136199449 in words is "one hundred thirty-six million, one hundred ninety-nine thousand, four hundred forty-nine".