9640940 has 24 divisors (see below), whose sum is σ = 20366640. Its totient is φ = 3833408.

The previous prime is 9640919. The next prime is 9640957. The reversal of 9640940 is 490469.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9640897 and 9640906.

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 7 ways as a sum of consecutive naturals, for example, 2234 + ... + 4926.

It is an arithmetic number, because the mean of its divisors is an integer number (848610).

Almost surely, 2^9640940 is an apocalyptic number.

It is an amenable number.

9640940 is an abundant number, since it is smaller than the sum of its proper divisors (10725700).

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

9640940 is a wasteful number, since it uses less digits than its factorization.

9640940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881 (or 2879 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 9640940 is about 3104.9863123692. The cubic root of 9640940 is about 212.8334051144.

The spelling of 9640940 in words is "nine million, six hundred forty thousand, nine hundred forty".