439399985 has 8 divisors (see below), whose sum is σ = 555031680. Its totient is φ = 333018864.

The previous prime is 439399951. The next prime is 439399991. The reversal of 439399985 is 589993934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 439399985 - 2¹⁰ = 439398961 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2312537 + ... + 2312726.

It is an arithmetic number, because the mean of its divisors is an integer number (69378960).

Almost surely, 2^439399985 is an apocalyptic number.

It is an amenable number.

439399985 is a deficient number, since it is larger than the sum of its proper divisors (115631695).

439399985 is a wasteful number, since it uses less digits than its factorization.

439399985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625287.

The product of its digits is 9447840, while the sum is 59.

The square root of 439399985 is about 20961.8697877837. The cubic root of 439399985 is about 760.2446032844.

The spelling of 439399985 in words is "four hundred thirty-nine million, three hundred ninety-nine thousand, nine hundred eighty-five".