989335620 has 288 divisors, whose sum is σ = 3832028928. Its totient is φ = 208645632.

The previous prime is 989335603. The next prime is 989335649. The reversal of 989335620 is 26533989.

989335620 is a `hidden beast` number, since 9 + 89 + 3 + 3 + 562 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 441142 + ... + 443378.

It is an arithmetic number, because the mean of its divisors is an integer number (13305656).

Almost surely, 2^989335620 is an apocalyptic number.

989335620 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989335620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1916014464).

989335620 is an abundant number, since it is smaller than the sum of its proper divisors (2842693308).

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

989335620 is a wasteful number, since it uses less digits than its factorization.

989335620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281 (or 2267 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 989335620 is about 31453.7059819666. The cubic root of 989335620 is about 996.4324947073.

The spelling of 989335620 in words is "nine hundred eighty-nine million, three hundred thirty-five thousand, six hundred twenty".