9899020 has 24 divisors (see below), whose sum is σ = 21142800. Its totient is φ = 3892032.

The previous prime is 9899009. The next prime is 9899023. The reversal of 9899020 is 209989.

It is not an unprimeable number, because it can be changed into a prime (9899023) 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, 3015 + ... + 5374.

It is an arithmetic number, because the mean of its divisors is an integer number (880950).

Almost surely, 2^9899020 is an apocalyptic number.

It is an amenable number.

9899020 is an abundant number, since it is smaller than the sum of its proper divisors (11243780).

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

9899020 is a wasteful number, since it uses less digits than its factorization.

9899020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8457 (or 8455 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 9899020 is about 3146.2708084334. The cubic root of 9899020 is about 214.7158315348.

The spelling of 9899020 in words is "nine million, eight hundred ninety-nine thousand, twenty".