135461009 has 2 divisors, whose sum is σ = 135461010. Its totient is φ = 135461008.

The previous prime is 135460999. The next prime is 135461017. The reversal of 135461009 is 900164531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85008400 + 50452609 = 9220^2 + 7103^2 .

It is a cyclic number.

It is not a de Polignac number, because 135461009 - 2⁴ = 135460993 is a prime.

It is not a weakly prime, because it can be changed into another prime (135461509) 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, 67730504 + 67730505.

It is an arithmetic number, because the mean of its divisors is an integer number (67730505).

Almost surely, 2^135461009 is an apocalyptic number.

It is an amenable number.

135461009 is a deficient number, since it is larger than the sum of its proper divisors (1).

135461009 is an equidigital number, since it uses as much as digits as its factorization.

135461009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 135461009 is about 11638.7717994641. The cubic root of 135461009 is about 513.5760570892.

The spelling of 135461009 in words is "one hundred thirty-five million, four hundred sixty-one thousand, nine".