8991896120927 has 4 divisors (see below), whose sum is σ = 8991956720616. Its totient is φ = 8991835521240.

The previous prime is 8991896120903. The next prime is 8991896120993. The reversal of 8991896120927 is 7290216981998.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8991896120927 - 2⁸ = 8991896120671 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 (8991896128927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30076724 + ... + 30374217.

It is an arithmetic number, because the mean of its divisors is an integer number (2247989180154).

Almost surely, 2^{8991896120927} is an apocalyptic number.

8991896120927 is a deficient number, since it is larger than the sum of its proper divisors (60599689).

8991896120927 is a wasteful number, since it uses less digits than its factorization.

8991896120927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60599688.

The product of its (nonzero) digits is 70543872, while the sum is 71.

The spelling of 8991896120927 in words is "eight trillion, nine hundred ninety-one billion, eight hundred ninety-six million, one hundred twenty thousand, nine hundred twenty-seven".