439685628 has 12 divisors (see below), whose sum is σ = 1025933160. Its totient is φ = 146561872.

The previous prime is 439685627. The next prime is 439685633. The reversal of 439685628 is 826586934.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439685627) 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, 18320223 + ... + 18320246.

It is an arithmetic number, because the mean of its divisors is an integer number (85494430).

Almost surely, 2^439685628 is an apocalyptic number.

It is an amenable number.

439685628 is an abundant number, since it is smaller than the sum of its proper divisors (586247532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

439685628 is a wasteful number, since it uses less digits than its factorization.

439685628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36640476 (or 36640474 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 439685628 is about 20968.6820758959. The cubic root of 439685628 is about 760.4093063015.

The spelling of 439685628 in words is "four hundred thirty-nine million, six hundred eighty-five thousand, six hundred twenty-eight".