8895991447 has 16 divisors (see below), whose sum is σ = 10306662912. Its totient is φ = 7520868000.

The previous prime is 8895991427. The next prime is 8895991469. The reversal of 8895991447 is 7441995988.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8895991447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8895991427) 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, 156393 + ... + 205549.

It is an arithmetic number, because the mean of its divisors is an integer number (644166432).

Almost surely, 2^8895991447 is an apocalyptic number.

8895991447 is a deficient number, since it is larger than the sum of its proper divisors (1410671465).

8895991447 is a wasteful number, since it uses less digits than its factorization.

8895991447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49518.

The product of its digits is 26127360, while the sum is 64.

The square root of 8895991447 is about 94318.5636394024. The cubic root of 8895991447 is about 2072.0399229020.

The spelling of 8895991447 in words is "eight billion, eight hundred ninety-five million, nine hundred ninety-one thousand, four hundred forty-seven".