9948978 has 96 divisors (see below), whose sum is σ = 25592112. Its totient is φ = 2764800.

The previous prime is 9948973. The next prime is 9948979. The reversal of 9948978 is 8798499.

9948978 is a `hidden beast` number, since 99 + 489 + 78 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 233289 + 9715689 = 483^2 + 3117^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9948971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163068 + ... + 163128.

Almost surely, 2^9948978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9948978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12796056).

9948978 is an abundant number, since it is smaller than the sum of its proper divisors (15643134).

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

9948978 is a wasteful number, since it uses less digits than its factorization.

9948978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 137 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 9948978 is about 3154.2000570668. The cubic root of 9948978 is about 215.0764321727.

The spelling of 9948978 in words is "nine million, nine hundred forty-eight thousand, nine hundred seventy-eight".