135983 has 8 divisors (see below), whose sum is σ = 151920. Its totient is φ = 120960.

The previous prime is 135979. The next prime is 136013. The reversal of 135983 is 389531.

135983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 135983 - 2² = 135979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113 + ... + 533.

It is an arithmetic number, because the mean of its divisors is an integer number (18990).

2¹³⁵⁹⁸³ is an apocalyptic number.

135983 is a deficient number, since it is larger than the sum of its proper divisors (15937).

135983 is a wasteful number, since it uses less digits than its factorization.

135983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its digits is 3240, while the sum is 29.

The square root of 135983 is about 368.7587287103. The cubic root of 135983 is about 51.4234889892.

The spelling of 135983 in words is "one hundred thirty-five thousand, nine hundred eighty-three".