136069889 has 2 divisors, whose sum is σ = 136069890. Its totient is φ = 136069888.

The previous prime is 136069877. The next prime is 136069919. The reversal of 136069889 is 988960631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97219600 + 38850289 = 9860^2 + 6233^2 .

It is a cyclic number.

It is not a de Polignac number, because 136069889 - 2⁴ = 136069873 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (136060889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68034944 + 68034945.

It is an arithmetic number, because the mean of its divisors is an integer number (68034945).

Almost surely, 2^136069889 is an apocalyptic number.

It is an amenable number.

136069889 is a deficient number, since it is larger than the sum of its proper divisors (1).

136069889 is an equidigital number, since it uses as much as digits as its factorization.

136069889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 136069889 is about 11664.8998709805. The cubic root of 136069889 is about 514.3443933891.

The spelling of 136069889 in words is "one hundred thirty-six million, sixty-nine thousand, eight hundred eighty-nine".