8859041991 has 12 divisors (see below), whose sum is σ = 12857043160. Its totient is φ = 5878036080.

The previous prime is 8859041963. The next prime is 8859042007. The reversal of 8859041991 is 1991409588.

8859041991 is a `hidden beast` number, since 8 + 8 + 590 + 41 + 9 + 9 + 1 = 666.

It is not a de Polignac number, because 8859041991 - 2¹⁴ = 8859025607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8859041911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2330656 + ... + 2334453.

Almost surely, 2^8859041991 is an apocalyptic number.

8859041991 is a deficient number, since it is larger than the sum of its proper divisors (3998001169).

8859041991 is a wasteful number, since it uses less digits than its factorization.

8859041991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665326 (or 4665323 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The square root of 8859041991 is about 94122.4839823089. The cubic root of 8859041991 is about 2069.1672061315.

The spelling of 8859041991 in words is "eight billion, eight hundred fifty-nine million, forty-one thousand, nine hundred ninety-one".