9909408 has 48 divisors (see below), whose sum is σ = 26278560. Its totient is φ = 3269376.

The previous prime is 9909407. The next prime is 9909409. The reversal of 9909408 is 8049099.

It is an interprime number because it is at equal distance from previous prime (9909407) and next prime (9909409).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (9909401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9991 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (547470).

Almost surely, 2^9909408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9909408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13139280).

9909408 is an abundant number, since it is smaller than the sum of its proper divisors (16369152).

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

9909408 is a wasteful number, since it uses less digits than its factorization.

9909408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 9909408 is about 3147.9212188363. The cubic root of 9909408 is about 214.7909126471.

The spelling of 9909408 in words is "nine million, nine hundred nine thousand, four hundred eight".