47839 has 4 divisors (see below), whose sum is σ = 52200. Its totient is φ = 43480.

The previous prime is 47837. The next prime is 47843. The reversal of 47839 is 93874.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47839 - 2¹ = 47837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2164 + ... + 2185.

It is an arithmetic number, because the mean of its divisors is an integer number (13050).

2⁴⁷⁸³⁹ is an apocalyptic number.

47839 is a deficient number, since it is larger than the sum of its proper divisors (4361).

47839 is a wasteful number, since it uses less digits than its factorization.

47839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its digits is 6048, while the sum is 31.

The square root of 47839 is about 218.7212838294. The cubic root of 47839 is about 36.3017335066.

The spelling of 47839 in words is "forty-seven thousand, eight hundred thirty-nine".