135159709 has 4 divisors (see below), whose sum is σ = 135191520. Its totient is φ = 135127900.

The previous prime is 135159701. The next prime is 135159727. The reversal of 135159709 is 907951531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135159709 - 2³ = 135159701 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135159701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8329 + ... + 18430.

It is an arithmetic number, because the mean of its divisors is an integer number (33797880).

Almost surely, 2^135159709 is an apocalyptic number.

It is an amenable number.

135159709 is a deficient number, since it is larger than the sum of its proper divisors (31811).

135159709 is an equidigital number, since it uses as much as digits as its factorization.

135159709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31810.

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 135159709 is about 11625.8207882282. The cubic root of 135159709 is about 513.1949995027.

The spelling of 135159709 in words is "one hundred thirty-five million, one hundred fifty-nine thousand, seven hundred nine".