998799167 has 2 divisors, whose sum is σ = 998799168. Its totient is φ = 998799166.

The previous prime is 998799143. The next prime is 998799169. The reversal of 998799167 is 761997899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998799167 - 2¹² = 998795071 is a prime.

Together with 998799169, 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 (998799169) 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, 499399583 + 499399584.

It is an arithmetic number, because the mean of its divisors is an integer number (499399584).

Almost surely, 2^998799167 is an apocalyptic number.

998799167 is a deficient number, since it is larger than the sum of its proper divisors (1).

998799167 is an equidigital number, since it uses as much as digits as its factorization.

998799167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15431472, while the sum is 65.

The square root of 998799167 is about 31603.7840614063. The cubic root of 998799167 is about 999.5995620041.

The spelling of 998799167 in words is "nine hundred ninety-eight million, seven hundred ninety-nine thousand, one hundred sixty-seven".