439144339 has 2 divisors, whose sum is σ = 439144340. Its totient is φ = 439144338.

The previous prime is 439144333. The next prime is 439144351. The reversal of 439144339 is 933441934.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 439144339 - 2¹³ = 439136147 is a prime.

It is not a weakly prime, because it can be changed into another prime (439144333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219572169 + 219572170.

It is an arithmetic number, because the mean of its divisors is an integer number (219572170).

Almost surely, 2^439144339 is an apocalyptic number.

439144339 is a deficient number, since it is larger than the sum of its proper divisors (1).

439144339 is an equidigital number, since it uses as much as digits as its factorization.

439144339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 40.

The square root of 439144339 is about 20955.7710189819. The cubic root of 439144339 is about 760.0971361301.

The spelling of 439144339 in words is "four hundred thirty-nine million, one hundred forty-four thousand, three hundred thirty-nine".