9867998 has 8 divisors (see below), whose sum is σ = 16916592. Its totient is φ = 4229136.

The previous prime is 9867971. The next prime is 9868009. The reversal of 9867998 is 8997689.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352415 + ... + 352442.

It is an arithmetic number, because the mean of its divisors is an integer number (2114574).

Almost surely, 2^9867998 is an apocalyptic number.

9867998 is a deficient number, since it is larger than the sum of its proper divisors (7048594).

9867998 is a wasteful number, since it uses less digits than its factorization.

9867998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704866.

The product of its digits is 1959552, while the sum is 56.

The square root of 9867998 is about 3141.3369765118. The cubic root of 9867998 is about 214.4913014043.

The spelling of 9867998 in words is "nine million, eight hundred sixty-seven thousand, nine hundred ninety-eight".