47844 has 24 divisors (see below), whose sum is σ = 124320. Its totient is φ = 15912.

The previous prime is 47843. The next prime is 47857. The reversal of 47844 is 44874.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (3584) is a multiple of the sum of its prime divisors (448).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 47844.

It is not an unprimeable number, because it can be changed into a prime (47843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114 + ... + 329.

It is an arithmetic number, because the mean of its divisors is an integer number (5180).

2⁴⁷⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

47844 is an abundant number, since it is smaller than the sum of its proper divisors (76476).

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 (62160).

47844 is a wasteful number, since it uses less digits than its factorization.

47844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 448 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 47844 is about 218.7327136027. The cubic root of 47844 is about 36.3029981814.

The spelling of 47844 in words is "forty-seven thousand, eight hundred forty-four".