9403944 has 64 divisors (see below), whose sum is σ = 25920000. Its totient is φ = 2819520.

The previous prime is 9403921. The next prime is 9403963. The reversal of 9403944 is 4493049.

9403944 = 138² + 139² + ... + 313².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47157 + ... + 47355.

It is an arithmetic number, because the mean of its divisors is an integer number (405000).

Almost surely, 2^9403944 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 9403944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12960000).

9403944 is an abundant number, since it is smaller than the sum of its proper divisors (16516056).

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

9403944 is a wasteful number, since it uses less digits than its factorization.

9403944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 9403944 is about 3066.5850713783. The cubic root of 9403944 is about 211.0749417465.

It can be divided in two parts, 940 and 3944, that added together give a palindrome (4884).

The spelling of 9403944 in words is "nine million, four hundred three thousand, nine hundred forty-four".