135849 has 8 divisors (see below), whose sum is σ = 207040. Its totient is φ = 77616.

The previous prime is 135841. The next prime is 135851. The reversal of 135849 is 948531.

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

It is not a de Polignac number, because 135849 - 2³ = 135841 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (135841) 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 7 ways as a sum of consecutive naturals, for example, 3214 + ... + 3255.

It is an arithmetic number, because the mean of its divisors is an integer number (25880).

2¹³⁵⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

135849 is a deficient number, since it is larger than the sum of its proper divisors (71191).

135849 is an equidigital number, since it uses as much as digits as its factorization.

135849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479.

The product of its digits is 4320, while the sum is 30.

The square root of 135849 is about 368.5769933135. The cubic root of 135849 is about 51.4065922394.

The spelling of 135849 in words is "one hundred thirty-five thousand, eight hundred forty-nine".