8239940 has 24 divisors (see below), whose sum is σ = 17599680. Its totient is φ = 3239648.

The previous prime is 8239927. The next prime is 8239967. The reversal of 8239940 is 499328.

8239940 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8239940² = 135793222407200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8239940.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2312 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (733320).

Almost surely, 2^8239940 is an apocalyptic number.

It is an amenable number.

8239940 is an abundant number, since it is smaller than the sum of its proper divisors (9359740).

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

8239940 is a wasteful number, since it uses less digits than its factorization.

8239940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7051 (or 7049 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 8239940 is about 2870.5295678672. The cubic root of 8239940 is about 201.9798365653.

The spelling of 8239940 in words is "eight million, two hundred thirty-nine thousand, nine hundred forty".