43809838859 has 2 divisors, whose sum is σ = 43809838860. Its totient is φ = 43809838858.

The previous prime is 43809838841. The next prime is 43809838889. The reversal of 43809838859 is 95883890834.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43809838859 - 2²⁸ = 43541403403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43809838795 and 43809838804.

It is not a weakly prime, because it can be changed into another prime (43809838889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21904919429 + 21904919430.

It is an arithmetic number, because the mean of its divisors is an integer number (21904919430).

Almost surely, 2^43809838859 is an apocalyptic number.

43809838859 is a deficient number, since it is larger than the sum of its proper divisors (1).

43809838859 is an equidigital number, since it uses as much as digits as its factorization.

43809838859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59719680, while the sum is 65.

The spelling of 43809838859 in words is "forty-three billion, eight hundred nine million, eight hundred thirty-eight thousand, eight hundred fifty-nine".