9998370 has 64 divisors (see below), whose sum is σ = 28080000. Its totient is φ = 2524608.

The previous prime is 9998333. The next prime is 9998377. The reversal of 9998370 is 738999.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4156 + ... + 6104.

It is an arithmetic number, because the mean of its divisors is an integer number (438750).

Almost surely, 2^9998370 is an apocalyptic number.

9998370 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9998370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14040000).

9998370 is an abundant number, since it is smaller than the sum of its proper divisors (18081630).

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

9998370 is a wasteful number, since it uses less digits than its factorization.

9998370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984 (or 1978 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 9998370 is about 3162.0199240359. The cubic root of 9998370 is about 215.4317626053.

The spelling of 9998370 in words is "nine million, nine hundred ninety-eight thousand, three hundred seventy".