989650080 has 144 divisors (see below), whose sum is σ = 3396733704. Its totient is φ = 262379520.

The previous prime is 989650037. The next prime is 989650097. The reversal of 989650080 is 80056989.

It can be written as a sum of positive squares in 4 ways, for example, as 173290896 + 816359184 = 13164^2 + 28572^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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

It is an unprimeable number.

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, 258742 + ... + 262538.

Almost surely, 2^989650080 is an apocalyptic number.

989650080 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 989650080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698366852).

989650080 is an abundant number, since it is smaller than the sum of its proper divisors (2407083624).

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

989650080 is a wasteful number, since it uses less digits than its factorization.

989650080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999 (or 3988 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 989650080 is about 31458.7043598429. The cubic root of 989650080 is about 996.5380554370.

The spelling of 989650080 in words is "nine hundred eighty-nine million, six hundred fifty thousand, eighty".