9945744 has 40 divisors (see below), whose sum is σ = 25807872. Its totient is φ = 3300480.

The previous prime is 9945743. The next prime is 9945779. The reversal of 9945744 is 4475499.

It is a d-powerful number, because it can be written as 9⁷ + 9⁷ + 4 + 5 + 7⁶ + 4 + 4⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 9945696 and 9945705.

It is not an unprimeable number, because it can be changed into a prime (9945743) 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, 18114 + ... + 18654.

Almost surely, 2^9945744 is an apocalyptic number.

It is an amenable number.

9945744 is an abundant number, since it is smaller than the sum of its proper divisors (15862128).

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

9945744 is a wasteful number, since it uses less digits than its factorization.

9945744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 929 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 9945744 is about 3153.6873656087. The cubic root of 9945744 is about 215.0531255053.

The spelling of 9945744 in words is "nine million, nine hundred forty-five thousand, seven hundred forty-four".