135329239 has 4 divisors (see below), whose sum is σ = 138986824. Its totient is φ = 131671656.

The previous prime is 135329219. The next prime is 135329273. The reversal of 135329239 is 932923531.

135329239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932923531 = 5297 ⋅176123.

It is a cyclic number.

It is not a de Polignac number, because 135329239 - 2²¹ = 133232087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 3657547 = 135329239 / (1 + 3 + 5 + 3 + 2 + 9 + 2 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135329198 and 135329207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135329219) 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, 1828737 + ... + 1828810.

It is an arithmetic number, because the mean of its divisors is an integer number (34746706).

Almost surely, 2^135329239 is an apocalyptic number.

135329239 is a deficient number, since it is larger than the sum of its proper divisors (3657585).

135329239 is an equidigital number, since it uses as much as digits as its factorization.

135329239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657584.

The product of its digits is 43740, while the sum is 37.

The square root of 135329239 is about 11633.1096014780. The cubic root of 135329239 is about 513.4094756433.

The spelling of 135329239 in words is "one hundred thirty-five million, three hundred twenty-nine thousand, two hundred thirty-nine".