135832709 has 4 divisors (see below), whose sum is σ = 136415916. Its totient is φ = 135249504.

The previous prime is 135832699. The next prime is 135832751. The reversal of 135832709 is 907238531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 907238531 = 9901 ⋅91631.

It can be written as a sum of positive squares in 2 ways, for example, as 71351809 + 64480900 = 8447^2 + 8030^2 .

It is a cyclic number.

It is not a de Polignac number, because 135832709 - 2¹⁶ = 135767173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135832759) 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, 291254 + ... + 291719.

It is an arithmetic number, because the mean of its divisors is an integer number (34103979).

Almost surely, 2^135832709 is an apocalyptic number.

It is an amenable number.

135832709 is a deficient number, since it is larger than the sum of its proper divisors (583207).

135832709 is an equidigital number, since it uses as much as digits as its factorization.

135832709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583206.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 135832709 is about 11654.7290401794. The cubic root of 135832709 is about 514.0453726595.

The spelling of 135832709 in words is "one hundred thirty-five million, eight hundred thirty-two thousand, seven hundred nine".