8989071621 has 16 divisors (see below), whose sum is σ = 12243753984. Its totient is φ = 5863621104.

The previous prime is 8989071601. The next prime is 8989071631. The reversal of 8989071621 is 1261709898.

It is not a de Polignac number, because 8989071621 - 2⁷ = 8989071493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8989071601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747966 + ... + 759888.

It is an arithmetic number, because the mean of its divisors is an integer number (765234624).

Almost surely, 2^8989071621 is an apocalyptic number.

It is an amenable number.

8989071621 is a deficient number, since it is larger than the sum of its proper divisors (3254682363).

8989071621 is a wasteful number, since it uses less digits than its factorization.

8989071621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17320.

The product of its (nonzero) digits is 435456, while the sum is 51.

The square root of 8989071621 is about 94810.7146951229. The cubic root of 8989071621 is about 2079.2415581836.

The spelling of 8989071621 in words is "eight billion, nine hundred eighty-nine million, seventy-one thousand, six hundred twenty-one".