135284609 has 2 divisors, whose sum is σ = 135284610. Its totient is φ = 135284608.

The previous prime is 135284603. The next prime is 135284663. The reversal of 135284609 is 906482531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129049600 + 6235009 = 11360^2 + 2497^2 .

It is a cyclic number.

It is not a de Polignac number, because 135284609 - 2⁴ = 135284593 is a prime.

It is not a weakly prime, because it can be changed into another prime (135284603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67642304 + 67642305.

It is an arithmetic number, because the mean of its divisors is an integer number (67642305).

Almost surely, 2^135284609 is an apocalyptic number.

It is an amenable number.

135284609 is a deficient number, since it is larger than the sum of its proper divisors (1).

135284609 is an equidigital number, since it uses as much as digits as its factorization.

135284609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 135284609 is about 11631.1912115656. The cubic root of 135284609 is about 513.3530306248.

The spelling of 135284609 in words is "one hundred thirty-five million, two hundred eighty-four thousand, six hundred nine".