9640331 has 4 divisors (see below), whose sum is σ = 9647352. Its totient is φ = 9633312.

The previous prime is 9640321. The next prime is 9640333. The reversal of 9640331 is 1330469.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9640331 - 2¹⁰ = 9639307 is a prime.

It is a super-2 number, since 2×9640331² = 185871963579122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9640331.

It is not an unprimeable number, because it can be changed into a prime (9640333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701 + ... + 4446.

It is an arithmetic number, because the mean of its divisors is an integer number (2411838).

Almost surely, 2^9640331 is an apocalyptic number.

9640331 is a deficient number, since it is larger than the sum of its proper divisors (7021).

9640331 is a wasteful number, since it uses less digits than its factorization.

9640331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 9640331 is about 3104.8882427553. Note that the first 3 decimals coincide. The cubic root of 9640331 is about 212.8289235918.

The spelling of 9640331 in words is "nine million, six hundred forty thousand, three hundred thirty-one".