9978425298 has 48 divisors (see below), whose sum is σ = 22966463520. Its totient is φ = 3120259968.

The previous prime is 9978425291. The next prime is 9978425309. The reversal of 9978425298 is 8925248799.

It is a happy number.

9978425298 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9978425291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40833 + ... + 147051.

It is an arithmetic number, because the mean of its divisors is an integer number (478467990).

Almost surely, 2^9978425298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9978425298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11483231760).

9978425298 is an abundant number, since it is smaller than the sum of its proper divisors (12988038222).

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

9978425298 is a wasteful number, since it uses less digits than its factorization.

9978425298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106551 (or 106548 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The square root of 9978425298 is about 99892.0682436799. The cubic root of 9978425298 is about 2152.8841982362.

The spelling of 9978425298 in words is "nine billion, nine hundred seventy-eight million, four hundred twenty-five thousand, two hundred ninety-eight".