998600000 has 84 divisors (see below), whose sum is σ = 2477333628. Its totient is φ = 399360000.

The previous prime is 998599997. The next prime is 998600003. The reversal of 998600000 is 6899.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (998599997) and next prime (998600003).

It can be written as a sum of positive squares in 6 ways, for example, as 879003904 + 119596096 = 29648^2 + 10936^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 998600000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998600003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197504 + ... + 202496.

It is an arithmetic number, because the mean of its divisors is an integer number (29492067).

Almost surely, 2^998600000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238666814).

998600000 is an abundant number, since it is smaller than the sum of its proper divisors (1478733628).

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

998600000 is an frugal number, since it uses more digits than its factorization.

998600000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030 (or 5000 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 998600000 is about 31600.6329050543. The cubic root of 998600000 is about 999.5331153860.

Adding to 998600000 its reverse (6899), we get a palindrome (998606899).

The spelling of 998600000 in words is "nine hundred ninety-eight million, six hundred thousand".