4689439 has 2 divisors, whose sum is σ = 4689440. Its totient is φ = 4689438.

The previous prime is 4689437. The next prime is 4689449. The reversal of 4689439 is 9349864.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4689439 - 2¹ = 4689437 is a prime.

Together with 4689437, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 4689395 and 4689404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4689437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2344719 + 2344720.

It is an arithmetic number, because the mean of its divisors is an integer number (2344720).

Almost surely, 2^4689439 is an apocalyptic number.

4689439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4689439 is an equidigital number, since it uses as much as digits as its factorization.

4689439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 4689439 is about 2165.5112560317. The cubic root of 4689439 is about 167.3813104370.

The spelling of 4689439 in words is "four million, six hundred eighty-nine thousand, four hundred thirty-nine".