43579 has 2 divisors, whose sum is σ = 43580. Its totient is φ = 43578.

The previous prime is 43577. The next prime is 43591. The reversal of 43579 is 97534.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43579 - 2¹ = 43577 is a prime.

Together with 43577, it forms a pair of twin primes.

43579 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (43573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21789 + 21790.

It is an arithmetic number, because the mean of its divisors is an integer number (21790).

2⁴³⁵⁷⁹ is an apocalyptic number.

43579 is a deficient number, since it is larger than the sum of its proper divisors (1).

43579 is an equidigital number, since it uses as much as digits as its factorization.

43579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 43579 is about 208.7558382417. The cubic root of 43579 is about 35.1905256009.

The spelling of 43579 in words is "forty-three thousand, five hundred seventy-nine".