135633409 has 2 divisors, whose sum is σ = 135633410. Its totient is φ = 135633408.

The previous prime is 135633397. The next prime is 135633427. The reversal of 135633409 is 904336531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85507009 + 50126400 = 9247^2 + 7080^2 .

It is a cyclic number.

It is not a de Polignac number, because 135633409 - 2⁹ = 135632897 is a prime.

It is a super-2 number, since 2×135633409² = 36792843273922562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135633209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67816704 + 67816705.

It is an arithmetic number, because the mean of its divisors is an integer number (67816705).

Almost surely, 2^135633409 is an apocalyptic number.

It is an amenable number.

135633409 is a deficient number, since it is larger than the sum of its proper divisors (1).

135633409 is an equidigital number, since it uses as much as digits as its factorization.

135633409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 135633409 is about 11646.1757242453. The cubic root of 135633409 is about 513.7938392586.

The spelling of 135633409 in words is "one hundred thirty-five million, six hundred thirty-three thousand, four hundred nine".