8939940 has 48 divisors (see below), whose sum is σ = 25714752. Its totient is φ = 2318976.

The previous prime is 8939933. The next prime is 8939947. The reversal of 8939940 is 499398.

It is an interprime number because it is at equal distance from previous prime (8939933) and next prime (8939947).

It is a junction number, because it is equal to n+sod(n) for n = 8939892 and 8939901.

It is not an unprimeable number, because it can be changed into a prime (8939947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207 + ... + 4233.

It is an arithmetic number, because the mean of its divisors is an integer number (535724).

Almost surely, 2^8939940 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 8939940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12857376).

8939940 is an abundant number, since it is smaller than the sum of its proper divisors (16774812).

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

8939940 is a wasteful number, since it uses less digits than its factorization.

8939940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076 (or 4074 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 8939940 is about 2989.9732440274. The cubic root of 8939940 is about 207.5446461245.

The spelling of 8939940 in words is "eight million, nine hundred thirty-nine thousand, nine hundred forty".