136216889 has 2 divisors, whose sum is σ = 136216890. Its totient is φ = 136216888.

The previous prime is 136216877. The next prime is 136216901. The reversal of 136216889 is 988612631.

It is a balanced prime because it is at equal distance from previous prime (136216877) and next prime (136216901).

It can be written as a sum of positive squares in only one way, i.e., 116812864 + 19404025 = 10808^2 + 4405^2 .

It is an emirp because it is prime and its reverse (988612631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136216889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136216849) 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, 68108444 + 68108445.

It is an arithmetic number, because the mean of its divisors is an integer number (68108445).

Almost surely, 2^136216889 is an apocalyptic number.

It is an amenable number.

136216889 is a deficient number, since it is larger than the sum of its proper divisors (1).

136216889 is an equidigital number, since it uses as much as digits as its factorization.

136216889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 136216889 is about 11671.1991243402. The cubic root of 136216889 is about 514.5295468063.

The spelling of 136216889 in words is "one hundred thirty-six million, two hundred sixteen thousand, eight hundred eighty-nine".