998285243 has 2 divisors, whose sum is σ = 998285244. Its totient is φ = 998285242.

The previous prime is 998285231. The next prime is 998285269. The reversal of 998285243 is 342582899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998285243 - 2⁴ = 998285227 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 998285191 and 998285200.

It is not a weakly prime, because it can be changed into another prime (998285443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499142621 + 499142622.

It is an arithmetic number, because the mean of its divisors is an integer number (499142622).

Almost surely, 2^998285243 is an apocalyptic number.

998285243 is a deficient number, since it is larger than the sum of its proper divisors (1).

998285243 is an equidigital number, since it uses as much as digits as its factorization.

998285243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 50.

The square root of 998285243 is about 31595.6522800211. The cubic root of 998285243 is about 999.4280873116.

The spelling of 998285243 in words is "nine hundred ninety-eight million, two hundred eighty-five thousand, two hundred forty-three".