43979959 has 2 divisors, whose sum is σ = 43979960. Its totient is φ = 43979958.

The previous prime is 43979953. The next prime is 43979977. The reversal of 43979959 is 95997934.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43979959 - 2⁹ = 43979447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43979953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21989979 + 21989980.

It is an arithmetic number, because the mean of its divisors is an integer number (21989980).

Almost surely, 2^43979959 is an apocalyptic number.

43979959 is a deficient number, since it is larger than the sum of its proper divisors (1).

43979959 is an equidigital number, since it uses as much as digits as its factorization.

43979959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2755620, while the sum is 55.

The square root of 43979959 is about 6631.7387614411. The cubic root of 43979959 is about 352.9812256117.

The spelling of 43979959 in words is "forty-three million, nine hundred seventy-nine thousand, nine hundred fifty-nine".