989437680 has 480 divisors, whose sum is σ = 4302724608. Its totient is φ = 205286400.

The previous prime is 989437679. The next prime is 989437721. The reversal of 989437680 is 86734989.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1496550 + ... + 1497210.

Almost surely, 2^989437680 is an apocalyptic number.

989437680 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 989437680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2151362304).

989437680 is an abundant number, since it is smaller than the sum of its proper divisors (3313286928).

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

989437680 is a wasteful number, since it uses less digits than its factorization.

989437680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 989437680 is about 31455.3283244667. The cubic root of 989437680 is about 996.4667575673.

It can be divided in two parts, 9894 and 37680, that added together give a palindrome (47574).

The spelling of 989437680 in words is "nine hundred eighty-nine million, four hundred thirty-seven thousand, six hundred eighty".