940 has 12 divisors (see below), whose sum is σ = 2016.
Its totient is φ = 368.
The previous prime is 937. The next prime is 941. The reversal of 940 is 49.
It is a happy number.
It is a plaindrome in base 16.
It is a nialpdrome in base 10 and base 12.
It is a self number, because there is not a number n which added to its sum of digits gives 940.
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, 4 + ... + 43.
It is an arithmetic number, because the mean of its divisors is an integer number (168).
It is an amenable number.
940 is an abundant number, since it is smaller than the sum of its proper divisors (1076).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008).
940 is a wasteful number, since it uses less digits than its factorization.
940 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 56 (or 54 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 940 is about 30.6594194335.
The cubic root of 940 is about 9.7958610872.
Adding to 940 its reverse (49), we get a palindrome (989).
It can be divided in two parts, 9 and 40, that added together give a square (49 = 72).
The spelling of 940 in words is "nine hundred forty", and thus it is an aban number.