4129439 has 2 divisors, whose sum is σ = 4129440. Its totient is φ = 4129438.

The previous prime is 4129429. The next prime is 4129493. The reversal of 4129439 is 9349214.

It is a happy number.

Together with next prime (4129493) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4129439 - 2⁴ = 4129423 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 (4129429) 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, 2064719 + 2064720.

It is an arithmetic number, because the mean of its divisors is an integer number (2064720).

Almost surely, 2^4129439 is an apocalyptic number.

4129439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4129439 is an equidigital number, since it uses as much as digits as its factorization.

4129439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 4129439 is about 2032.1021135760. The cubic root of 4129439 is about 160.4342241385.

The spelling of 4129439 in words is "four million, one hundred twenty-nine thousand, four hundred thirty-nine".