8383840 has 48 divisors (see below), whose sum is σ = 20154960. Its totient is φ = 3294720.

The previous prime is 8383829. The next prime is 8383847. The reversal of 8383840 is 483838.

It is a happy number.

8383840 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 8383796 and 8383805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8383847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9331 + ... + 10189.

It is an arithmetic number, because the mean of its divisors is an integer number (419895).

Almost surely, 2^8383840 is an apocalyptic number.

8383840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8383840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10077480).

8383840 is an abundant number, since it is smaller than the sum of its proper divisors (11771120).

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

8383840 is a wasteful number, since it uses less digits than its factorization.

8383840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 8383840 is about 2895.4861422566. The cubic root of 8383840 is about 203.1488308135.

The spelling of 8383840 in words is "eight million, three hundred eighty-three thousand, eight hundred forty".