992867987 has 2 divisors, whose sum is σ = 992867988. Its totient is φ = 992867986.

The previous prime is 992867959. The next prime is 992868001. The reversal of 992867987 is 789768299.

It is a strong prime.

It is an emirp because it is prime and its reverse (789768299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 992867987 - 2¹² = 992863891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (992867947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496433993 + 496433994.

It is an arithmetic number, because the mean of its divisors is an integer number (496433994).

Almost surely, 2^992867987 is an apocalyptic number.

992867987 is a deficient number, since it is larger than the sum of its proper divisors (1).

992867987 is an equidigital number, since it uses as much as digits as its factorization.

992867987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27433728, while the sum is 65.

The square root of 992867987 is about 31509.8077905912. The cubic root of 992867987 is about 997.6169880984.

The spelling of 992867987 in words is "nine hundred ninety-two million, eight hundred sixty-seven thousand, nine hundred eighty-seven".