9638998 has 4 divisors (see below), whose sum is σ = 14458500. Its totient is φ = 4819498.

The previous prime is 9638957. The next prime is 9639011. The reversal of 9638998 is 8998369.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8998369 = 197 ⋅45677.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2409748 + ... + 2409751.

It is an arithmetic number, because the mean of its divisors is an integer number (3614625).

Almost surely, 2^9638998 is an apocalyptic number.

9638998 is a deficient number, since it is larger than the sum of its proper divisors (4819502).

9638998 is a wasteful number, since it uses less digits than its factorization.

9638998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4819501.

The product of its digits is 839808, while the sum is 52.

The square root of 9638998 is about 3104.6735738238. The cubic root of 9638998 is about 212.8191136232.

The spelling of 9638998 in words is "nine million, six hundred thirty-eight thousand, nine hundred ninety-eight".