8424439 has 2 divisors, whose sum is σ = 8424440. Its totient is φ = 8424438.

The previous prime is 8424407. The next prime is 8424443. The reversal of 8424439 is 9344248.

8424439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8424439 - 2⁵ = 8424407 is a prime.

8424439 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8424499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4212219 + 4212220.

It is an arithmetic number, because the mean of its divisors is an integer number (4212220).

Almost surely, 2^8424439 is an apocalyptic number.

8424439 is a deficient number, since it is larger than the sum of its proper divisors (1).

8424439 is an equidigital number, since it uses as much as digits as its factorization.

8424439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 34.

The square root of 8424439 is about 2902.4884151362. The cubic root of 8424439 is about 203.4762210442.

The spelling of 8424439 in words is "eight million, four hundred twenty-four thousand, four hundred thirty-nine".