998931100 has 72 divisors (see below), whose sum is σ = 2250637200. Its totient is φ = 384384000.

The previous prime is 998931097. The next prime is 998931103. The reversal of 998931100 is 1139899.

It is an interprime number because it is at equal distance from previous prime (998931097) and next prime (998931103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998931103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1162471 + ... + 1163329.

It is an arithmetic number, because the mean of its divisors is an integer number (31258850).

Almost surely, 2^998931100 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 998931100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1125318600).

998931100 is an abundant number, since it is smaller than the sum of its proper divisors (1251706100).

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

998931100 is a wasteful number, since it uses less digits than its factorization.

998931100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 998931100 is about 31605.8712899993. The cubic root of 998931100 is about 999.6435729749.

The spelling of 998931100 in words is "nine hundred ninety-eight million, nine hundred thirty-one thousand, one hundred".