9830421 has 6 divisors (see below), whose sum is σ = 14199510. Its totient is φ = 6553608.

The previous prime is 9830413. The next prime is 9830459. The reversal of 9830421 is 1240389.

It can be written as a sum of positive squares in only one way, i.e., 9678321 + 152100 = 3111^2 + 390^2 .

It is not a de Polignac number, because 9830421 - 2³ = 9830413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9830221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 546126 + ... + 546143.

It is an arithmetic number, because the mean of its divisors is an integer number (2366585).

Almost surely, 2^9830421 is an apocalyptic number.

It is an amenable number.

9830421 is a deficient number, since it is larger than the sum of its proper divisors (4369089).

9830421 is a wasteful number, since it uses less digits than its factorization.

9830421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092275 (or 1092272 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 9830421 is about 3135.3502196724. The cubic root of 9830421 is about 214.2186965662.

The spelling of 9830421 in words is "nine million, eight hundred thirty thousand, four hundred twenty-one".