998684343 has 16 divisors (see below), whose sum is σ = 1486002400. Its totient is φ = 662878080.

The previous prime is 998684249. The next prime is 998684359. The reversal of 998684343 is 343486899.

It is a happy number.

It is not a de Polignac number, because 998684343 - 2¹² = 998680247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 998684343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998684383) 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 in 15 ways as a sum of consecutive naturals, for example, 74578 + ... + 86943.

It is an arithmetic number, because the mean of its divisors is an integer number (92875150).

Almost surely, 2^998684343 is an apocalyptic number.

998684343 is a deficient number, since it is larger than the sum of its proper divisors (487318057).

998684343 is a wasteful number, since it uses less digits than its factorization.

998684343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161759 (or 161753 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 998684343 is about 31601.9673912875. The cubic root of 998684343 is about 999.5612551978.

The spelling of 998684343 in words is "nine hundred ninety-eight million, six hundred eighty-four thousand, three hundred forty-three".