9243440 has 40 divisors (see below), whose sum is σ = 21628080. Its totient is φ = 3673856.

The previous prime is 9243439. The next prime is 9243457. The reversal of 9243440 is 443429.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17906 + ... + 18414.

It is an arithmetic number, because the mean of its divisors is an integer number (540702).

Almost surely, 2^9243440 is an apocalyptic number.

It is an amenable number.

9243440 is an abundant number, since it is smaller than the sum of its proper divisors (12384640).

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

9243440 is a wasteful number, since it uses less digits than its factorization.

9243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 9243440 is about 3040.3026165170. The cubic root of 9243440 is about 209.8671873745.

Adding to 9243440 its reverse (443429), we get a palindrome (9686869).

The spelling of 9243440 in words is "nine million, two hundred forty-three thousand, four hundred forty".