9638457 has 4 divisors (see below), whose sum is σ = 12851280. Its totient is φ = 6425636.

The previous prime is 9638443. The next prime is 9638459. The reversal of 9638457 is 7548369.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7548369 = 3 ⋅2516123.

It is a cyclic number.

It is not a de Polignac number, because 9638457 - 2⁴ = 9638441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9638459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606407 + ... + 1606412.

It is an arithmetic number, because the mean of its divisors is an integer number (3212820).

Almost surely, 2^9638457 is an apocalyptic number.

It is an amenable number.

9638457 is a deficient number, since it is larger than the sum of its proper divisors (3212823).

9638457 is a wasteful number, since it uses less digits than its factorization.

9638457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212822.

The product of its digits is 181440, while the sum is 42.

The square root of 9638457 is about 3104.5864458894. The cubic root of 9638457 is about 212.8151319751.

The spelling of 9638457 in words is "nine million, six hundred thirty-eight thousand, four hundred fifty-seven".