9803684421 has 30 divisors (see below), whose sum is σ = 14729222310. Its totient is φ = 6498298224.

The previous prime is 9803684419. The next prime is 9803684441. The reversal of 9803684421 is 1244863089.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9632441025 + 171243396 = 98145^2 + 13086^2 .

It is not a de Polignac number, because 9803684421 - 2¹ = 9803684419 is a prime.

It is a super-2 number, since 2×9803684421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9803684441) 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 29 ways as a sum of consecutive naturals, for example, 13484760 + ... + 13485486.

It is an arithmetic number, because the mean of its divisors is an integer number (490974077).

Almost surely, 2^9803684421 is an apocalyptic number.

It is an amenable number.

9803684421 is a deficient number, since it is larger than the sum of its proper divisors (4925537889).

9803684421 is an frugal number, since it uses more digits than its factorization.

9803684421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 9803684421 is about 99013.5567536082. The cubic root of 9803684421 is about 2140.2431101368.

The spelling of 9803684421 in words is "nine billion, eight hundred three million, six hundred eighty-four thousand, four hundred twenty-one".