43113439939 has 2 divisors, whose sum is σ = 43113439940. Its totient is φ = 43113439938.

The previous prime is 43113439933. The next prime is 43113440017. The reversal of 43113439939 is 93993431134.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43113439939 - 2³ = 43113439931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43113439892 and 43113439901.

It is not a weakly prime, because it can be changed into another prime (43113439931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21556719969 + 21556719970.

It is an arithmetic number, because the mean of its divisors is an integer number (21556719970).

Almost surely, 2^43113439939 is an apocalyptic number.

43113439939 is a deficient number, since it is larger than the sum of its proper divisors (1).

43113439939 is an equidigital number, since it uses as much as digits as its factorization.

43113439939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 49.

The spelling of 43113439939 in words is "forty-three billion, one hundred thirteen million, four hundred thirty-nine thousand, nine hundred thirty-nine".