136441009 has 2 divisors, whose sum is σ = 136441010. Its totient is φ = 136441008.

The previous prime is 136440977. The next prime is 136441051. The reversal of 136441009 is 900144631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122213025 + 14227984 = 11055^2 + 3772^2 .

It is a cyclic number.

It is not a de Polignac number, because 136441009 - 2⁵ = 136440977 is a prime.

It is a super-2 number, since 2×136441009² = 37232297873876162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136441309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68220504 + 68220505.

It is an arithmetic number, because the mean of its divisors is an integer number (68220505).

Almost surely, 2^136441009 is an apocalyptic number.

It is an amenable number.

136441009 is a deficient number, since it is larger than the sum of its proper divisors (1).

136441009 is an equidigital number, since it uses as much as digits as its factorization.

136441009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 136441009 is about 11680.7965909864. The cubic root of 136441009 is about 514.8115803012.

The spelling of 136441009 in words is "one hundred thirty-six million, four hundred forty-one thousand, nine".