135447 has 16 divisors (see below), whose sum is σ = 204288. Its totient is φ = 79200.

The previous prime is 135433. The next prime is 135449. The reversal of 135447 is 744531.

It is not a de Polignac number, because 135447 - 2⁴ = 135431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822 + ... + 972.

It is an arithmetic number, because the mean of its divisors is an integer number (12768).

2¹³⁵⁴⁴⁷ is an apocalyptic number.

135447 is a deficient number, since it is larger than the sum of its proper divisors (68841).

135447 is a wasteful number, since it uses less digits than its factorization.

135447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190.

The product of its digits is 1680, while the sum is 24.

The square root of 135447 is about 368.0312486733. The cubic root of 135447 is about 51.3558352277.

Adding to 135447 its reverse (744531), we get a palindrome (879978).

It can be divided in two parts, 13 and 5447, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 135447 in words is "one hundred thirty-five thousand, four hundred forty-seven".