9904400 has 60 divisors (see below), whose sum is σ = 25970064. Its totient is φ = 3600000.

The previous prime is 9904397. The next prime is 9904403. The reversal of 9904400 is 44099.

It is an interprime number because it is at equal distance from previous prime (9904397) and next prime (9904403).

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 9904400.

It is not an unprimeable number, because it can be changed into a prime (9904403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3275 + ... + 5525.

Almost surely, 2^9904400 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 9904400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12985032).

9904400 is an abundant number, since it is smaller than the sum of its proper divisors (16065664).

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

9904400 is a wasteful number, since it uses less digits than its factorization.

9904400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280 (or 2269 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 9904400 is about 3147.1256727369. The cubic root of 9904400 is about 214.7547229928.

Adding to 9904400 its reverse (44099), we get a palindrome (9948499).

It can be divided in two parts, 9 and 904400, that added together give a palindrome (904409).

The spelling of 9904400 in words is "nine million, nine hundred four thousand, four hundred".