9856998 has 16 divisors (see below), whose sum is σ = 21904560. Its totient is φ = 3285648.

The previous prime is 9856963. The next prime is 9857009. The reversal of 9856998 is 8996589.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 182537 = 9856998 / (9 + 8 + 5 + 6 + 9 + 9 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91215 + ... + 91322.

It is an arithmetic number, because the mean of its divisors is an integer number (1369035).

Almost surely, 2^9856998 is an apocalyptic number.

9856998 is an abundant number, since it is smaller than the sum of its proper divisors (12047562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9856998 is a wasteful number, since it uses less digits than its factorization.

9856998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182548 (or 182542 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 9856998 is about 3139.5856414502. The cubic root of 9856998 is about 214.4115729208.

The spelling of 9856998 in words is "nine million, eight hundred fifty-six thousand, nine hundred ninety-eight".