8039980 has 72 divisors (see below), whose sum is σ = 19495728. Its totient is φ = 2767872.

The previous prime is 8039971. The next prime is 8039981. The reversal of 8039980 is 899308.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8039981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75087 + ... + 75193.

It is an arithmetic number, because the mean of its divisors is an integer number (270774).

Almost surely, 2^8039980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8039980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9747864).

8039980 is an abundant number, since it is smaller than the sum of its proper divisors (11455748).

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

8039980 is a wasteful number, since it uses less digits than its factorization.

8039980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 8039980 is about 2835.4858490213. The cubic root of 8039980 is about 200.3326132023.

The spelling of 8039980 in words is "eight million, thirty-nine thousand, nine hundred eighty".