9444540 has 96 divisors (see below), whose sum is σ = 30643200. Its totient is φ = 2128896.

The previous prime is 9444511. The next prime is 9444541. The reversal of 9444540 is 454449.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 9444498 and 9444507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9444541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47361 + ... + 47559.

It is an arithmetic number, because the mean of its divisors is an integer number (319200).

Almost surely, 2^9444540 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 9444540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15321600).

9444540 is an abundant number, since it is smaller than the sum of its proper divisors (21198660).

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

9444540 is a wasteful number, since it uses less digits than its factorization.

9444540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 9444540 is about 3073.1970324078. The cubic root of 9444540 is about 211.3782363915.

Adding to 9444540 its reverse (454449), we get a palindrome (9898989).

The spelling of 9444540 in words is "nine million, four hundred forty-four thousand, five hundred forty".