439979318 has 4 divisors (see below), whose sum is σ = 659968980. Its totient is φ = 219989658.

The previous prime is 439979317. The next prime is 439979377. The reversal of 439979318 is 813979934.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 439979318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439979317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109994828 + ... + 109994831.

It is an arithmetic number, because the mean of its divisors is an integer number (164992245).

Almost surely, 2^439979318 is an apocalyptic number.

439979318 is a deficient number, since it is larger than the sum of its proper divisors (219989662).

439979318 is a wasteful number, since it uses less digits than its factorization.

439979318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219989661.

The product of its digits is 1469664, while the sum is 53.

The square root of 439979318 is about 20975.6839697780. The cubic root of 439979318 is about 760.5785748954.

The spelling of 439979318 in words is "four hundred thirty-nine million, nine hundred seventy-nine thousand, three hundred eighteen".