43471979 has 4 divisors (see below), whose sum is σ = 43540440. Its totient is φ = 43403520.

The previous prime is 43471933. The next prime is 43471999. The reversal of 43471979 is 97917434.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43471979 - 2⁸ = 43471723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43471999) 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, 33269 + ... + 34550.

It is an arithmetic number, because the mean of its divisors is an integer number (10885110).

Almost surely, 2^43471979 is an apocalyptic number.

43471979 is a deficient number, since it is larger than the sum of its proper divisors (68461).

43471979 is an equidigital number, since it uses as much as digits as its factorization.

43471979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68460.

The product of its digits is 190512, while the sum is 44.

The square root of 43471979 is about 6593.3283704060. The cubic root of 43471979 is about 351.6169510617.

The spelling of 43471979 in words is "forty-three million, four hundred seventy-one thousand, nine hundred seventy-nine".