40856 has 8 divisors (see below), whose sum is σ = 76620. Its totient is φ = 20424.

The previous prime is 40853. The next prime is 40867. The reversal of 40856 is 65804.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 13.

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 40856.

It is not an unprimeable number, because it can be changed into a prime (40853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2546 + ... + 2561.

2⁴⁰⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

40856 is a deficient number, since it is larger than the sum of its proper divisors (35764).

40856 is a wasteful number, since it uses less digits than its factorization.

40856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113 (or 5109 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 40856 is about 202.1286718900. The cubic root of 40856 is about 34.4417556771.

It can be divided in two parts, 408 and 56, that added together give a palindrome (464).

The spelling of 40856 in words is "forty thousand, eight hundred fifty-six".