9925440 has 168 divisors, whose sum is σ = 36832032. Its totient is φ = 2257920.

The previous prime is 9925439. The next prime is 9925471. The reversal of 9925440 is 445299.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-3 number, since 3×9925440³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46935 + ... + 47145.

Almost surely, 2^9925440 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 9925440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18416016).

9925440 is an abundant number, since it is smaller than the sum of its proper divisors (26906592).

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

9925440 is a wasteful number, since it uses less digits than its factorization.

9925440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 9925440 is about 3150.4666321039. The cubic root of 9925440 is about 214.9066838595.

The spelling of 9925440 in words is "nine million, nine hundred twenty-five thousand, four hundred forty".