9099820 has 12 divisors (see below), whose sum is σ = 19109664. Its totient is φ = 3639920.

The previous prime is 9099809. The next prime is 9099821. The reversal of 9099820 is 289909.

It is a self number, because there is not a number n which added to its sum of digits gives 9099820.

It is not an unprimeable number, because it can be changed into a prime (9099821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227476 + ... + 227515.

It is an arithmetic number, because the mean of its divisors is an integer number (1592472).

Almost surely, 2^9099820 is an apocalyptic number.

It is an amenable number.

9099820 is an abundant number, since it is smaller than the sum of its proper divisors (10009844).

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

9099820 is a wasteful number, since it uses less digits than its factorization.

9099820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455000 (or 454998 counting only the distinct ones).

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

The square root of 9099820 is about 3016.5907909426. The cubic root of 9099820 is about 208.7745713126.

The spelling of 9099820 in words is "nine million, ninety-nine thousand, eight hundred twenty".