9924978 has 32 divisors (see below), whose sum is σ = 23030784. Its totient is φ = 2792592.

The previous prime is 9924961. The next prime is 9924979. The reversal of 9924978 is 8794299.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9924979) 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 15 ways as a sum of consecutive naturals, for example, 1051 + ... + 4577.

It is an arithmetic number, because the mean of its divisors is an integer number (719712).

Almost surely, 2^9924978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9924978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11515392).

9924978 is an abundant number, since it is smaller than the sum of its proper divisors (13105806).

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

9924978 is a wasteful number, since it uses less digits than its factorization.

9924978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606.

The product of its digits is 326592, while the sum is 48.

The square root of 9924978 is about 3150.3933087791. The cubic root of 9924978 is about 214.9033493834.

The spelling of 9924978 in words is "nine million, nine hundred twenty-four thousand, nine hundred seventy-eight".