9998000 has 40 divisors (see below), whose sum is σ = 24180000. Its totient is φ = 3998400.

The previous prime is 9997997. The next prime is 9998017. The reversal of 9998000 is 8999.

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 10.

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, 500 + ... + 4499.

It is an arithmetic number, because the mean of its divisors is an integer number (604500).

Almost surely, 2^9998000 is an apocalyptic number.

It is an amenable number.

9998000 is an abundant number, since it is smaller than the sum of its proper divisors (14182000).

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

9998000 is a wasteful number, since it uses less digits than its factorization.

9998000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022 (or 5006 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 9998000 is about 3161.9614165894. The cubic root of 9998000 is about 215.4291051476.

The spelling of 9998000 in words is "nine million, nine hundred ninety-eight thousand".