943 has 4 divisors (see below), whose sum is σ = 1008. Its totient is φ = 880.

The previous prime is 941. The next prime is 947. The reversal of 943 is 349.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 943 - 2¹ = 941 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 5, base 9, base 11, base 12, base 13 and base 16.

It is a nialpdrome in base 6 and base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3 + ... + 43.

It is an arithmetic number, because the mean of its divisors is an integer number (252).

943 is a deficient number, since it is larger than the sum of its proper divisors (65).

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

943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64.

The product of its digits is 108, while the sum is 16.

The square root of 943 is about 30.7083050656. The cubic root of 943 is about 9.8062711493.

Adding to 943 its sum of digits (16), we get a palindrome (959).

It can be divided in two parts, 94 and 3, that multiplied together give a palindrome (282).

The spelling of 943 in words is "nine hundred forty-three", and thus it is an aban number.