998038043 has 2 divisors, whose sum is σ = 998038044. Its totient is φ = 998038042.

The previous prime is 998038033. The next prime is 998038147. The reversal of 998038043 is 340830899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998038043 - 2⁸ = 998037787 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 998037985 and 998038003.

It is not a weakly prime, because it can be changed into another prime (998038003) 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, 499019021 + 499019022.

It is an arithmetic number, because the mean of its divisors is an integer number (499019022).

Almost surely, 2^998038043 is an apocalyptic number.

998038043 is a deficient number, since it is larger than the sum of its proper divisors (1).

998038043 is an equidigital number, since it uses as much as digits as its factorization.

998038043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 998038043 is about 31591.7401071862. The cubic root of 998038043 is about 999.3455861693.

The spelling of 998038043 in words is "nine hundred ninety-eight million, thirty-eight thousand, forty-three".