9792978 has 16 divisors (see below), whose sum is σ = 21092736. Its totient is φ = 3013200.

The previous prime is 9792971. The next prime is 9792983. The reversal of 9792978 is 8792979.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9792978.

It is not an unprimeable number, because it can be changed into a prime (9792971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62698 + ... + 62853.

It is an arithmetic number, because the mean of its divisors is an integer number (1318296).

Almost surely, 2^9792978 is an apocalyptic number.

9792978 is an abundant number, since it is smaller than the sum of its proper divisors (11299758).

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

9792978 is a wasteful number, since it uses less digits than its factorization.

9792978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125569.

The product of its digits is 571536, while the sum is 51.

The square root of 9792978 is about 3129.3734197120. The cubic root of 9792978 is about 213.9463719814.

Subtracting from 9792978 its reverse (8792979), we obtain a palindrome (999999).

The spelling of 9792978 in words is "nine million, seven hundred ninety-two thousand, nine hundred seventy-eight".