439223816 has 16 divisors (see below), whose sum is σ = 843631740. Its totient is φ = 214255360.

The previous prime is 439223809. The next prime is 439223843. The reversal of 439223816 is 618322934.

It can be written as a sum of positive squares in 2 ways, for example, as 380640100 + 58583716 = 19510^2 + 7654^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 439223816.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669221 + ... + 669876.

Almost surely, 2^439223816 is an apocalyptic number.

It is an amenable number.

439223816 is a deficient number, since it is larger than the sum of its proper divisors (404407924).

439223816 is a wasteful number, since it uses less digits than its factorization.

439223816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339144 (or 1339140 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 439223816 is about 20957.6672365986. The cubic root of 439223816 is about 760.1429878701.

The spelling of 439223816 in words is "four hundred thirty-nine million, two hundred twenty-three thousand, eight hundred sixteen".