8421419443 has 2 divisors, whose sum is σ = 8421419444. Its totient is φ = 8421419442.

The previous prime is 8421419441. The next prime is 8421419459. The reversal of 8421419443 is 3449141248.

8421419443 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8421419443 - 2¹ = 8421419441 is a prime.

Together with 8421419441, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 8421419396 and 8421419405.

It is not a weakly prime, because it can be changed into another prime (8421419441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4210709721 + 4210709722.

It is an arithmetic number, because the mean of its divisors is an integer number (4210709722).

Almost surely, 2^8421419443 is an apocalyptic number.

8421419443 is a deficient number, since it is larger than the sum of its proper divisors (1).

8421419443 is an equidigital number, since it uses as much as digits as its factorization.

8421419443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 40.

The square root of 8421419443 is about 91768.2921438554. The cubic root of 8421419443 is about 2034.5190759657.

The spelling of 8421419443 in words is "eight billion, four hundred twenty-one million, four hundred nineteen thousand, four hundred forty-three".