9830440 has 32 divisors (see below), whose sum is σ = 22540680. Its totient is φ = 3857152.

The previous prime is 9830413. The next prime is 9830459. The reversal of 9830440 is 440389.

It can be written as a sum of positive squares in 4 ways, for example, as 7739524 + 2090916 = 2782^2 + 1446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9830399 and 9830408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199 + ... + 4438.

Almost surely, 2^9830440 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 9830440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11270340).

9830440 is an abundant number, since it is smaller than the sum of its proper divisors (12710240).

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

9830440 is a wasteful number, since it uses less digits than its factorization.

9830440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701 (or 4697 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 9830440 is about 3135.3532496355. The cubic root of 9830440 is about 214.2188345784.

The spelling of 9830440 in words is "nine million, eight hundred thirty thousand, four hundred forty".