8434243 has 2 divisors, whose sum is σ = 8434244. Its totient is φ = 8434242.

The previous prime is 8434219. The next prime is 8434253. The reversal of 8434243 is 3424348.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8434243 is a prime.

It is a super-2 number, since 2×8434243² = 142272909966098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8434213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4217121 + 4217122.

It is an arithmetic number, because the mean of its divisors is an integer number (4217122).

Almost surely, 2^8434243 is an apocalyptic number.

8434243 is a deficient number, since it is larger than the sum of its proper divisors (1).

8434243 is an equidigital number, since it uses as much as digits as its factorization.

8434243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 28.

The square root of 8434243 is about 2904.1768196857. The cubic root of 8434243 is about 203.5551227380. Note that the first 3 decimals are identical.

The spelling of 8434243 in words is "eight million, four hundred thirty-four thousand, two hundred forty-three".