439065439 has 4 divisors (see below), whose sum is σ = 441759256. Its totient is φ = 436371624.

The previous prime is 439065437. The next prime is 439065449. The reversal of 439065439 is 934560934.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 439065439 - 2¹ = 439065437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 439065395 and 439065404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439065437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346664 + ... + 1346989.

It is an arithmetic number, because the mean of its divisors is an integer number (110439814).

Almost surely, 2^439065439 is an apocalyptic number.

439065439 is a deficient number, since it is larger than the sum of its proper divisors (2693817).

439065439 is a wasteful number, since it uses less digits than its factorization.

439065439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693816.

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 439065439 is about 20953.8883980993. Note that the first 3 decimals coincide. The cubic root of 439065439 is about 760.0516117997.

The spelling of 439065439 in words is "four hundred thirty-nine million, sixty-five thousand, four hundred thirty-nine".