9798140 has 24 divisors (see below), whose sum is σ = 22447152. Its totient is φ = 3562880.

The previous prime is 9798101. The next prime is 9798149. The reversal of 9798140 is 418979.

9798140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9798094 and 9798103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9798149) 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, 22049 + ... + 22488.

It is an arithmetic number, because the mean of its divisors is an integer number (935298).

Almost surely, 2^9798140 is an apocalyptic number.

It is an amenable number.

9798140 is an abundant number, since it is smaller than the sum of its proper divisors (12649012).

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

9798140 is a wasteful number, since it uses less digits than its factorization.

9798140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44557 (or 44555 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 9798140 is about 3130.1980767996. The cubic root of 9798140 is about 213.9839566393.

It can be divided in two parts, 979 and 8140, that added together give a palindrome (9119).

The spelling of 9798140 in words is "nine million, seven hundred ninety-eight thousand, one hundred forty".