998016403 has 2 divisors, whose sum is σ = 998016404. Its totient is φ = 998016402.

The previous prime is 998016379. The next prime is 998016431. The reversal of 998016403 is 304610899.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998016403 is a prime.

It is not a weakly prime, because it can be changed into another prime (998016473) 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, 499008201 + 499008202.

It is an arithmetic number, because the mean of its divisors is an integer number (499008202).

Almost surely, 2^998016403 is an apocalyptic number.

998016403 is a deficient number, since it is larger than the sum of its proper divisors (1).

998016403 is an equidigital number, since it uses as much as digits as its factorization.

998016403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 998016403 is about 31591.3976107421. The cubic root of 998016403 is about 999.3383633335.

The spelling of 998016403 in words is "nine hundred ninety-eight million, sixteen thousand, four hundred three".