135996239 has 8 divisors (see below), whose sum is σ = 141246720. Its totient is φ = 130844056.

The previous prime is 135996233. The next prime is 135996269. The reversal of 135996239 is 932699531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135996239 - 2⁸ = 135995983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135996193 and 135996202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135996233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21749 + ... + 27294.

It is an arithmetic number, because the mean of its divisors is an integer number (17655840).

Almost surely, 2^135996239 is an apocalyptic number.

135996239 is a deficient number, since it is larger than the sum of its proper divisors (5250481).

135996239 is an equidigital number, since it uses as much as digits as its factorization.

135996239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49149.

The product of its digits is 393660, while the sum is 47.

The square root of 135996239 is about 11661.7425370311. The cubic root of 135996239 is about 514.2515776026.

The spelling of 135996239 in words is "one hundred thirty-five million, nine hundred ninety-six thousand, two hundred thirty-nine".