439959944 has 8 divisors (see below), whose sum is σ = 824924910. Its totient is φ = 219979968.

The previous prime is 439959941. The next prime is 439960039. The reversal of 439959944 is 449959934.

It can be written as a sum of positive squares in only one way, i.e., 352312900 + 87647044 = 18770^2 + 9362^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 439959944.

It is not an unprimeable number, because it can be changed into a prime (439959941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27497489 + ... + 27497504.

Almost surely, 2^439959944 is an apocalyptic number.

It is an amenable number.

439959944 is a deficient number, since it is larger than the sum of its proper divisors (384964966).

439959944 is a wasteful number, since it uses less digits than its factorization.

439959944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54994999 (or 54994995 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 56.

The square root of 439959944 is about 20975.2221442348. Note that the first 3 decimals coincide. The cubic root of 439959944 is about 760.5674109876.

The spelling of 439959944 in words is "four hundred thirty-nine million, nine hundred fifty-nine thousand, nine hundred forty-four".