40940 has 24 divisors (see below), whose sum is σ = 90720. Its totient is φ = 15488.

The previous prime is 40939. The next prime is 40949. The reversal of 40940 is 4904.

40940 = T₄₆ + T₄₇ + ... + T₆₉.

40940 = 68² + 69² + ... + 75².

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40940.

It is not an unprimeable number, because it can be changed into a prime (40949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416 + ... + 504.

It is an arithmetic number, because the mean of its divisors is an integer number (3780).

2⁴⁰⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45360).

40940 is an abundant number, since it is smaller than the sum of its proper divisors (49780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40940 is a wasteful number, since it uses less digits than its factorization.

40940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 40940 is about 202.3363536293. The cubic root of 40940 is about 34.4653436201.

The spelling of 40940 in words is "forty thousand, nine hundred forty".