983 has 2 divisors, whose sum is σ = 984.
Its totient is φ = 982.
The previous prime is 977. The next prime is 991. The reversal of 983 is 389.
It is a weak prime.
983 is a truncatable prime.
It is an emirp because it is prime and its reverse (389) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 983 - 24 = 967 is a prime.
It is a Chen prime.
It is an Ulam number.
It is an alternating number because its digits alternate between odd and even.
It is a plaindrome in base 12 and base 15.
It is a nialpdrome in base 10.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 983.
It is not a weakly prime, because it can be changed into another prime (953) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491 + 492.
It is an arithmetic number, because the mean of its divisors is an integer number (492).
2983 is an apocalyptic number.
983 is a deficient number, since it is larger than the sum of its proper divisors (1).
983 is an equidigital number, since it uses as much as digits as its factorization.
983 is an evil number, because the sum of its binary digits is even.
The product of its digits is 216, while the sum is 20.
The square root of 983 is about 31.3528308132.
The cubic root of 983 is about 9.9430091547.
Subtracting from 983 its product of digits (216), we obtain a palindrome (767).
It can be divided in two parts, 98 and 3, that added together give a palindrome (101).
The spelling of 983 in words is "nine hundred eighty-three", and thus it is an aban number and an oban number.