8099840 has 96 divisors (see below), whose sum is σ = 22407840. Its totient is φ = 2752512.

The previous prime is 8099827. The next prime is 8099843. The reversal of 8099840 is 489908.

It is a junction number, because it is equal to n+sod(n) for n = 8099794 and 8099803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8099843) 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, 71624 + ... + 71736.

It is an arithmetic number, because the mean of its divisors is an integer number (233415).

Almost surely, 2^8099840 is an apocalyptic number.

8099840 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 8099840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11203920).

8099840 is an abundant number, since it is smaller than the sum of its proper divisors (14308000).

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

8099840 is a wasteful number, since it uses less digits than its factorization.

8099840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 8099840 is about 2846.0217848780. The cubic root of 8099840 is about 200.8285626793.

The spelling of 8099840 in words is "eight million, ninety-nine thousand, eight hundred forty".