8439344928 has 72 divisors (see below), whose sum is σ = 27427877568. Its totient is φ = 2411240832.

The previous prime is 8439344917. The next prime is 8439344959. The reversal of 8439344928 is 8294439348.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2091076 + ... + 2095107.

It is an arithmetic number, because the mean of its divisors is an integer number (380942744).

Almost surely, 2^8439344928 is an apocalyptic number.

It is an amenable number.

8439344928 is an abundant number, since it is smaller than the sum of its proper divisors (18988532640).

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

8439344928 is a wasteful number, since it uses less digits than its factorization.

8439344928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4186206 (or 4186195 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The square root of 8439344928 is about 91865.9073214868. The cubic root of 8439344928 is about 2035.9615840048.

The spelling of 8439344928 in words is "eight billion, four hundred thirty-nine million, three hundred forty-four thousand, nine hundred twenty-eight".