998760823 has 2 divisors, whose sum is σ = 998760824. Its totient is φ = 998760822.

The previous prime is 998760817. The next prime is 998760949. The reversal of 998760823 is 328067899.

It is a weak prime.

It is an emirp because it is prime and its reverse (328067899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998760823 - 2¹³ = 998752631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998700823) 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, 499380411 + 499380412.

It is an arithmetic number, because the mean of its divisors is an integer number (499380412).

Almost surely, 2^998760823 is an apocalyptic number.

998760823 is a deficient number, since it is larger than the sum of its proper divisors (1).

998760823 is an equidigital number, since it uses as much as digits as its factorization.

998760823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 998760823 is about 31603.1774193672. The cubic root of 998760823 is about 999.5867702647.

The spelling of 998760823 in words is "nine hundred ninety-eight million, seven hundred sixty thousand, eight hundred twenty-three".