789868987 has 2 divisors, whose sum is σ = 789868988. Its totient is φ = 789868986.

The previous prime is 789868913. The next prime is 789868991.

789868987 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 789868987 - 2¹⁵ = 789836219 is a prime.

It is not a weakly prime, because it can be changed into another prime (789868907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394934493 + 394934494.

It is an arithmetic number, because the mean of its divisors is an integer number (394934494).

Almost surely, 2^789868987 is an apocalyptic number.

789868987 is a deficient number, since it is larger than the sum of its proper divisors (1).

789868987 is an equidigital number, since it uses as much as digits as its factorization.

789868987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97542144, while the sum is 70.

The square root of 789868987 is about 28104.6079317965. The cubic root of 789868987 is about 924.3824412600.

The spelling of 789868987 in words is "seven hundred eighty-nine million, eight hundred sixty-eight thousand, nine hundred eighty-seven".