8428943 has 2 divisors, whose sum is σ = 8428944. Its totient is φ = 8428942.

The previous prime is 8428909. The next prime is 8428949. The reversal of 8428943 is 3498248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8428943 - 2⁸ = 8428687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8428897 and 8428906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8428949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4214471 + 4214472.

It is an arithmetic number, because the mean of its divisors is an integer number (4214472).

Almost surely, 2^8428943 is an apocalyptic number.

8428943 is a deficient number, since it is larger than the sum of its proper divisors (1).

8428943 is an equidigital number, since it uses as much as digits as its factorization.

8428943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 38.

The square root of 8428943 is about 2903.2641974164. The cubic root of 8428943 is about 203.5124764208.

The spelling of 8428943 in words is "eight million, four hundred twenty-eight thousand, nine hundred forty-three".