40838 has 8 divisors (see below), whose sum is σ = 70032. Its totient is φ = 17496.

The previous prime is 40829. The next prime is 40841. The reversal of 40838 is 83804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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 40838.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (8754).

2⁴⁰⁸³⁸ is an apocalyptic number.

40838 is a deficient number, since it is larger than the sum of its proper divisors (29194).

40838 is a wasteful number, since it uses less digits than its factorization.

40838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 40838 is about 202.0841408919. The cubic root of 40838 is about 34.4366969124.

It can be divided in two parts, 40 and 838, that added together give a palindrome (878).

The spelling of 40838 in words is "forty thousand, eight hundred thirty-eight".