40184 has 8 divisors (see below), whose sum is σ = 75360. Its totient is φ = 20088.

The previous prime is 40177. The next prime is 40189. The reversal of 40184 is 48104.

It is a happy number.

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

It is a super-2 number, since 2×40184² = 3229507712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40189) by changing a digit.

40184 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2504 + ... + 2519.

It is an arithmetic number, because the mean of its divisors is an integer number (9420).

2⁴⁰¹⁸⁴ is an apocalyptic number.

It is an amenable number.

40184 is a deficient number, since it is larger than the sum of its proper divisors (35176).

40184 is a wasteful number, since it uses less digits than its factorization.

40184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029 (or 5025 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 40184 is about 200.4594722132. The cubic root of 40184 is about 34.2518779939.

Adding to 40184 its reverse (48104), we get a palindrome (88288).

The spelling of 40184 in words is "forty thousand, one hundred eighty-four".