398530943 has 2 divisors, whose sum is σ = 398530944. Its totient is φ = 398530942.

The previous prime is 398530939. The next prime is 398530967. The reversal of 398530943 is 349035893.

It is a weak prime.

It is an emirp because it is prime and its reverse (349035893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398530943 - 2² = 398530939 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 398530894 and 398530903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398530933) 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, 199265471 + 199265472.

It is an arithmetic number, because the mean of its divisors is an integer number (199265472).

Almost surely, 2^398530943 is an apocalyptic number.

398530943 is a deficient number, since it is larger than the sum of its proper divisors (1).

398530943 is an equidigital number, since it uses as much as digits as its factorization.

398530943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 398530943 is about 19963.2397921780. The cubic root of 398530943 is about 735.9031845074.

The spelling of 398530943 in words is "three hundred ninety-eight million, five hundred thirty thousand, nine hundred forty-three".