9739640 has 32 divisors (see below), whose sum is σ = 23204880. Its totient is φ = 3666432.

The previous prime is 9739559. The next prime is 9739643. The reversal of 9739640 is 469379.

9739640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9739594 and 9739603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9739643) 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, 6482 + ... + 7841.

Almost surely, 2^9739640 is an apocalyptic number.

It is an amenable number.

9739640 is an abundant number, since it is smaller than the sum of its proper divisors (13465240).

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

9739640 is a wasteful number, since it uses less digits than its factorization.

9739640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14351 (or 14347 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 9739640 is about 3120.8396306122. The cubic root of 9739640 is about 213.5572410400.

The spelling of 9739640 in words is "nine million, seven hundred thirty-nine thousand, six hundred forty".