398328577 has 2 divisors, whose sum is σ = 398328578. Its totient is φ = 398328576.

The previous prime is 398328551. The next prime is 398328589. The reversal of 398328577 is 775823893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282206401 + 116122176 = 16799^2 + 10776^2 .

It is a cyclic number.

It is not a de Polignac number, because 398328577 - 2¹¹ = 398326529 is a prime.

It is not a weakly prime, because it can be changed into another prime (398328677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199164288 + 199164289.

It is an arithmetic number, because the mean of its divisors is an integer number (199164289).

Almost surely, 2^398328577 is an apocalyptic number.

It is an amenable number.

398328577 is a deficient number, since it is larger than the sum of its proper divisors (1).

398328577 is an equidigital number, since it uses as much as digits as its factorization.

398328577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 52.

The square root of 398328577 is about 19958.1706827054. The cubic root of 398328577 is about 735.7786044716.

The spelling of 398328577 in words is "three hundred ninety-eight million, three hundred twenty-eight thousand, five hundred seventy-seven".