43913 has 2 divisors, whose sum is σ = 43914. Its totient is φ = 43912.

The previous prime is 43891. The next prime is 43933. The reversal of 43913 is 31934.

43913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (43933) can be obtained adding 43913 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41209 + 2704 = 203^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 43913 - 2¹⁴ = 27529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21956 + 21957.

It is an arithmetic number, because the mean of its divisors is an integer number (21957).

2⁴³⁹¹³ is an apocalyptic number.

It is an amenable number.

43913 is a deficient number, since it is larger than the sum of its proper divisors (1).

43913 is an equidigital number, since it uses as much as digits as its factorization.

43913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 20.

The square root of 43913 is about 209.5542889086. The cubic root of 43913 is about 35.2801997956.

The spelling of 43913 in words is "forty-three thousand, nine hundred thirteen".