8842549991 has 16 divisors (see below), whose sum is σ = 9910349568. Its totient is φ = 7819876800.

The previous prime is 8842549987. The next prime is 8842550009. The reversal of 8842549991 is 1999452488.

It is a cyclic number.

It is not a de Polignac number, because 8842549991 - 2² = 8842549987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8842549991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8842549901) 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, 128246 + ... + 184748.

It is an arithmetic number, because the mean of its divisors is an integer number (619396848).

Almost surely, 2^8842549991 is an apocalyptic number.

8842549991 is a deficient number, since it is larger than the sum of its proper divisors (1067799577).

8842549991 is a wasteful number, since it uses less digits than its factorization.

8842549991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56902.

The product of its digits is 7464960, while the sum is 59.

The square root of 8842549991 is about 94034.8339233925. The cubic root of 8842549991 is about 2067.8824207468.

The spelling of 8842549991 in words is "eight billion, eight hundred forty-two million, five hundred forty-nine thousand, nine hundred ninety-one".