135633439 has 4 divisors (see below), whose sum is σ = 137857000. Its totient is φ = 133409880.

The previous prime is 135633437. The next prime is 135633467. The reversal of 135633439 is 934336531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135633439 - 2¹ = 135633437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135633398 and 135633407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135633437) 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 3 ways as a sum of consecutive naturals, for example, 1111689 + ... + 1111810.

It is an arithmetic number, because the mean of its divisors is an integer number (34464250).

Almost surely, 2^135633439 is an apocalyptic number.

135633439 is a deficient number, since it is larger than the sum of its proper divisors (2223561).

135633439 is an equidigital number, since it uses as much as digits as its factorization.

135633439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223560.

The product of its digits is 87480, while the sum is 37.

The square root of 135633439 is about 11646.1770122217. The cubic root of 135633439 is about 513.7938771397.

The spelling of 135633439 in words is "one hundred thirty-five million, six hundred thirty-three thousand, four hundred thirty-nine".