43979 has 8 divisors (see below), whose sum is σ = 50400. Its totient is φ = 38016.

The previous prime is 43973. The next prime is 43987. The reversal of 43979 is 97934.

It is a happy number.

43979 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43979 - 2⁴ = 43963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43973) 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, 122 + ... + 320.

It is an arithmetic number, because the mean of its divisors is an integer number (6300).

2⁴³⁹⁷⁹ is an apocalyptic number.

43979 is a deficient number, since it is larger than the sum of its proper divisors (6421).

43979 is a wasteful number, since it uses less digits than its factorization.

43979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229.

The product of its digits is 6804, while the sum is 32.

The square root of 43979 is about 209.7117068740. The cubic root of 43979 is about 35.2978659962.

The spelling of 43979 in words is "forty-three thousand, nine hundred seventy-nine".