4321439 has 2 divisors, whose sum is σ = 4321440. Its totient is φ = 4321438.

The previous prime is 4321411. The next prime is 4321481. The reversal of 4321439 is 9341234.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4321439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4321139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160719 + 2160720.

It is an arithmetic number, because the mean of its divisors is an integer number (2160720).

Almost surely, 2^4321439 is an apocalyptic number.

4321439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4321439 is an equidigital number, since it uses as much as digits as its factorization.

4321439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 4321439 is about 2078.8071098589. The cubic root of 4321439 is about 162.8831385389.

The spelling of 4321439 in words is "four million, three hundred twenty-one thousand, four hundred thirty-nine".