398063831057 has 2 divisors, whose sum is σ = 398063831058. Its totient is φ = 398063831056.

The previous prime is 398063831027. The next prime is 398063831111. The reversal of 398063831057 is 750138360893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315929429776 + 82134401281 = 562076^2 + 286591^2 .

It is a cyclic number.

It is not a de Polignac number, because 398063831057 - 2¹⁰ = 398063830033 is a prime.

It is not a weakly prime, because it can be changed into another prime (398063831017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199031915528 + 199031915529.

It is an arithmetic number, because the mean of its divisors is an integer number (199031915529).

Almost surely, 2^398063831057 is an apocalyptic number.

It is an amenable number.

398063831057 is a deficient number, since it is larger than the sum of its proper divisors (1).

398063831057 is an equidigital number, since it uses as much as digits as its factorization.

398063831057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 398063831057 in words is "three hundred ninety-eight billion, sixty-three million, eight hundred thirty-one thousand, fifty-seven".