8639444161 has 8 divisors (see below), whose sum is σ = 9022320000. Its totient is φ = 8257172352.

The previous prime is 8639444141. The next prime is 8639444179. The reversal of 8639444161 is 1614449368.

8639444161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8639444161 - 2²³ = 8631055553 is a prime.

It is a super-2 number, since 2×8639444161² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8639444111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121645 + ... + 179098.

It is an arithmetic number, because the mean of its divisors is an integer number (1127790000).

Almost surely, 2^8639444161 is an apocalyptic number.

It is an amenable number.

8639444161 is a deficient number, since it is larger than the sum of its proper divisors (382875839).

8639444161 is a wasteful number, since it uses less digits than its factorization.

8639444161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302015.

The product of its digits is 497664, while the sum is 46.

The square root of 8639444161 is about 92948.6103231243. The cubic root of 8639444161 is about 2051.9271317665.

The spelling of 8639444161 in words is "eight billion, six hundred thirty-nine million, four hundred forty-four thousand, one hundred sixty-one".