9806298021 has 32 divisors (see below), whose sum is σ = 15749072640. Its totient is φ = 5994648000.

The previous prime is 9806298013. The next prime is 9806298053. The reversal of 9806298021 is 1208926089.

It is not a de Polignac number, because 9806298021 - 2³ = 9806298013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9806298001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39510 + ... + 145511.

It is an arithmetic number, because the mean of its divisors is an integer number (492158520).

Almost surely, 2^9806298021 is an apocalyptic number.

It is an amenable number.

9806298021 is a deficient number, since it is larger than the sum of its proper divisors (5942774619).

9806298021 is a wasteful number, since it uses less digits than its factorization.

9806298021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185194 (or 185188 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 9806298021 is about 99026.7540667672. The cubic root of 9806298021 is about 2140.4332849779.

The spelling of 9806298021 in words is "nine billion, eight hundred six million, two hundred ninety-eight thousand, twenty-one".