398340615329 has 2 divisors, whose sum is σ = 398340615330. Its totient is φ = 398340615328.

The previous prime is 398340615311. The next prime is 398340615427. The reversal of 398340615329 is 923516043893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338241112225 + 60099503104 = 581585^2 + 245152^2 .

It is a cyclic number.

It is not a de Polignac number, because 398340615329 - 2⁸ = 398340615073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (398340611329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199170307664 + 199170307665.

It is an arithmetic number, because the mean of its divisors is an integer number (199170307665).

Almost surely, 2^398340615329 is an apocalyptic number.

It is an amenable number.

398340615329 is a deficient number, since it is larger than the sum of its proper divisors (1).

398340615329 is an equidigital number, since it uses as much as digits as its factorization.

398340615329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 398340615329 in words is "three hundred ninety-eight billion, three hundred forty million, six hundred fifteen thousand, three hundred twenty-nine".