8789878987 has 2 divisors, whose sum is σ = 8789878988. Its totient is φ = 8789878986.

The previous prime is 8789878961. The next prime is 8789879027. The reversal of 8789878987 is 7898789878.

8789878987 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8789878987 is a prime.

It is a super-2 number, since 2×8789878987² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (8789870987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4394939493 + 4394939494.

It is an arithmetic number, because the mean of its divisors is an integer number (4394939494).

Almost surely, 2^8789878987 is an apocalyptic number.

8789878987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8789878987 is an equidigital number, since it uses as much as digits as its factorization.

8789878987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 910393344, while the sum is 79.

The square root of 8789878987 is about 93754.3544962046. The cubic root of 8789878987 is about 2063.7684333074.

The spelling of 8789878987 in words is "eight billion, seven hundred eighty-nine million, eight hundred seventy-eight thousand, nine hundred eighty-seven".