9638431 has 16 divisors (see below), whose sum is σ = 10902528. Its totient is φ = 8445600.

The previous prime is 9638423. The next prime is 9638437. The reversal of 9638431 is 1348369.

It is a cyclic number.

It is not a de Polignac number, because 9638431 - 2³ = 9638423 is a prime.

It is a super-2 number, since 2×9638431² = 185798704283522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9638437) 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 15 ways as a sum of consecutive naturals, for example, 53161 + ... + 53341.

It is an arithmetic number, because the mean of its divisors is an integer number (681408).

Almost surely, 2^9638431 is an apocalyptic number.

9638431 is a deficient number, since it is larger than the sum of its proper divisors (1264097).

9638431 is a wasteful number, since it uses less digits than its factorization.

9638431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its digits is 15552, while the sum is 34.

The square root of 9638431 is about 3104.5822585333. The cubic root of 9638431 is about 212.8149406167.

The spelling of 9638431 in words is "nine million, six hundred thirty-eight thousand, four hundred thirty-one".