8791365887 has 2 divisors, whose sum is σ = 8791365888. Its totient is φ = 8791365886.

The previous prime is 8791365883. The next prime is 8791365889. The reversal of 8791365887 is 7885631978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8791365887 - 2² = 8791365883 is a prime.

It is a super-2 number, since 2×8791365887² (a number of 21 digits) contains 22 as substring.

Together with 8791365889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8791365883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4395682943 + 4395682944.

It is an arithmetic number, because the mean of its divisors is an integer number (4395682944).

Almost surely, 2^8791365887 is an apocalyptic number.

8791365887 is a deficient number, since it is larger than the sum of its proper divisors (1).

8791365887 is an equidigital number, since it uses as much as digits as its factorization.

8791365887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 62.

The square root of 8791365887 is about 93762.2839258942. The cubic root of 8791365887 is about 2063.8847960877.

The spelling of 8791365887 in words is "eight billion, seven hundred ninety-one million, three hundred sixty-five thousand, eight hundred eighty-seven".