439427 has 2 divisors, whose sum is σ = 439428. Its totient is φ = 439426.

The previous prime is 439421. The next prime is 439429. The reversal of 439427 is 724934.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 439427 - 2⁸ = 439171 is a prime.

Together with 439429, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 4³ + 3¹⁰ + 4⁹ + 9 + 2⁹ + 7⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 439427.

It is not a weakly prime, because it can be changed into another prime (439421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219713 + 219714.

It is an arithmetic number, because the mean of its divisors is an integer number (219714).

2⁴³⁹⁴²⁷ is an apocalyptic number.

439427 is a deficient number, since it is larger than the sum of its proper divisors (1).

439427 is an equidigital number, since it uses as much as digits as its factorization.

439427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 439427 is about 662.8929023606. The cubic root of 439427 is about 76.0260183309.

The spelling of 439427 in words is "four hundred thirty-nine thousand, four hundred twenty-seven".