9909948 has 12 divisors (see below), whose sum is σ = 23123240. Its totient is φ = 3303312.

The previous prime is 9909943. The next prime is 9909961. The reversal of 9909948 is 8499099.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 9909897 and 9909906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9909943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412903 + ... + 412926.

Almost surely, 2^9909948 is an apocalyptic number.

It is an amenable number.

9909948 is an abundant number, since it is smaller than the sum of its proper divisors (13213292).

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

9909948 is a wasteful number, since it uses less digits than its factorization.

9909948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825836 (or 825834 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 9909948 is about 3148.0069885564. The cubic root of 9909948 is about 214.7948141579.

The spelling of 9909948 in words is "nine million, nine hundred nine thousand, nine hundred forty-eight".