989010100 has 72 divisors (see below), whose sum is σ = 2323462400. Its totient is φ = 363242880.

The previous prime is 989010091. The next prime is 989010101. The reversal of 989010100 is 1010989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989010101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256789 + ... + 260611.

Almost surely, 2^989010100 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 989010100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161731200).

989010100 is an abundant number, since it is smaller than the sum of its proper divisors (1334452300).

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

989010100 is a wasteful number, since it uses less digits than its factorization.

989010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049 (or 4042 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 989010100 is about 31448.5309672805. The cubic root of 989010100 is about 996.3231976935.

The spelling of 989010100 in words is "nine hundred eighty-nine million, ten thousand, one hundred".