9798978 has 32 divisors (see below), whose sum is σ = 22538880. Its totient is φ = 2782080.

The previous prime is 9798973. The next prime is 9799019. The reversal of 9798978 is 8798979.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9798973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6958 + ... + 8246.

It is an arithmetic number, because the mean of its divisors is an integer number (704340).

Almost surely, 2^9798978 is an apocalyptic number.

9798978 is an abundant number, since it is smaller than the sum of its proper divisors (12739902).

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

9798978 is a wasteful number, since it uses less digits than its factorization.

9798978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482.

The product of its digits is 2286144, while the sum is 57.

The square root of 9798978 is about 3130.3319312814. The cubic root of 9798978 is about 213.9900568938.

Subtracting from 9798978 its reverse (8798979), we obtain a palindrome (999999).

The spelling of 9798978 in words is "nine million, seven hundred ninety-eight thousand, nine hundred seventy-eight".