8243429 has 2 divisors, whose sum is σ = 8243430. Its totient is φ = 8243428.

The previous prime is 8243423. The next prime is 8243441. The reversal of 8243429 is 9243428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7756225 + 487204 = 2785^2 + 698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8243429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8243395 and 8243404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8243423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4121714 + 4121715.

It is an arithmetic number, because the mean of its divisors is an integer number (4121715).

Almost surely, 2^8243429 is an apocalyptic number.

It is an amenable number.

8243429 is a deficient number, since it is larger than the sum of its proper divisors (1).

8243429 is an equidigital number, since it uses as much as digits as its factorization.

8243429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 32.

The square root of 8243429 is about 2871.1372311333. The cubic root of 8243429 is about 202.0083403412.

Subtracting 8243429 from its reverse (9243428), we obtain a palindrome (999999).

The spelling of 8243429 in words is "eight million, two hundred forty-three thousand, four hundred twenty-nine".