43849 has 4 divisors (see below), whose sum is σ = 47236. Its totient is φ = 40464.

The previous prime is 43801. The next prime is 43853. The reversal of 43849 is 94834.

43849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94834 = 2 ⋅47417.

It can be written as a sum of positive squares in 2 ways, for example, as 28224 + 15625 = 168^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 43849 - 2⁷ = 43721 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43889) 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, 1674 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (11809).

2⁴³⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

43849 is a deficient number, since it is larger than the sum of its proper divisors (3387).

43849 is a wasteful number, since it uses less digits than its factorization.

43849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386.

The product of its digits is 3456, while the sum is 28.

The square root of 43849 is about 209.4015281702. The cubic root of 43849 is about 35.2630520216.

The spelling of 43849 in words is "forty-three thousand, eight hundred forty-nine".