9925784 has 32 divisors (see below), whose sum is σ = 20466000. Its totient is φ = 4475520.

The previous prime is 9925781. The next prime is 9925793. The reversal of 9925784 is 4875299.

It is a happy number.

9925784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9925781) 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, 12734 + ... + 13490.

Almost surely, 2^9925784 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 9925784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10233000).

9925784 is an abundant number, since it is smaller than the sum of its proper divisors (10540216).

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

9925784 is a wasteful number, since it uses less digits than its factorization.

9925784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 919 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 9925784 is about 3150.5212267179. The cubic root of 9925784 is about 214.9091666057.

Subtracting from 9925784 its sum of digits (44), we obtain a triangular number (9925740 = T₄₄₅₅).

It can be divided in two parts, 992 and 5784, that added together give a palindrome (6776).

The spelling of 9925784 in words is "nine million, nine hundred twenty-five thousand, seven hundred eighty-four".