9640431 has 16 divisors (see below), whose sum is σ = 14344800. Its totient is φ = 6398784.

The previous prime is 9640417. The next prime is 9640447. The reversal of 9640431 is 1340469.

It is not a de Polignac number, because 9640431 - 2⁷ = 9640303 is a prime.

It is a super-2 number, since 2×9640431² = 185875819731522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 9640395 and 9640404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6835 + ... + 8123.

It is an arithmetic number, because the mean of its divisors is an integer number (896550).

Almost surely, 2^9640431 is an apocalyptic number.

9640431 is a deficient number, since it is larger than the sum of its proper divisors (4704369).

9640431 is a wasteful number, since it uses less digits than its factorization.

9640431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 9640431 is about 3104.9043463527. The cubic root of 9640431 is about 212.8296594869.

The spelling of 9640431 in words is "nine million, six hundred forty thousand, four hundred thirty-one".