9897804 has 108 divisors (see below), whose sum is σ = 30209088. Its totient is φ = 2721600.

The previous prime is 9897793. The next prime is 9897809. The reversal of 9897804 is 4087989.

It is a self number, because there is not a number n which added to its sum of digits gives 9897804.

It is not an unprimeable number, because it can be changed into a prime (9897809) 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 35 ways as a sum of consecutive naturals, for example, 54594 + ... + 54774.

Almost surely, 2^9897804 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 9897804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15104544).

9897804 is an abundant number, since it is smaller than the sum of its proper divisors (20311284).

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

9897804 is a wasteful number, since it uses less digits than its factorization.

9897804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 9897804 is about 3146.0775578488. The cubic root of 9897804 is about 214.7070392455.

It can be divided in two parts, 9897 and 804, that added together give a palindrome (10701).

The spelling of 9897804 in words is "nine million, eight hundred ninety-seven thousand, eight hundred four".