9989451582 has 16 divisors (see below), whose sum is σ = 21795167232. Its totient is φ = 3027106520.

The previous prime is 9989451569. The next prime is 9989451611. The reversal of 9989451582 is 2851549899.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75677598 + ... + 75677729.

It is an arithmetic number, because the mean of its divisors is an integer number (1362197952).

Almost surely, 2^9989451582 is an apocalyptic number.

9989451582 is an abundant number, since it is smaller than the sum of its proper divisors (11805715650).

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

9989451582 is a wasteful number, since it uses less digits than its factorization.

9989451582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151355343.

The product of its digits is 9331200, while the sum is 60.

The square root of 9989451582 is about 99947.2439940192. The cubic root of 9989451582 is about 2153.6768942624.

The spelling of 9989451582 in words is "nine billion, nine hundred eighty-nine million, four hundred fifty-one thousand, five hundred eighty-two".