9798821 has 8 divisors (see below), whose sum is σ = 10389504. Its totient is φ = 9225360.

The previous prime is 9798793. The next prime is 9798823. The reversal of 9798821 is 1288979.

9798821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9798821 - 2²² = 5604517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9798823) 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, 3125 + ... + 5418.

It is an arithmetic number, because the mean of its divisors is an integer number (1298688).

Almost surely, 2^9798821 is an apocalyptic number.

It is an amenable number.

9798821 is a deficient number, since it is larger than the sum of its proper divisors (590683).

9798821 is a wasteful number, since it uses less digits than its factorization.

9798821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611.

The product of its digits is 72576, while the sum is 44.

The square root of 9798821 is about 3130.3068539682. The cubic root of 9798821 is about 213.9889140325.

The spelling of 9798821 in words is "nine million, seven hundred ninety-eight thousand, eight hundred twenty-one".