398063831027 has 2 divisors, whose sum is σ = 398063831028. Its totient is φ = 398063831026.

The previous prime is 398063831017. The next prime is 398063831057. The reversal of 398063831027 is 720138360893.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398063831027 - 2²⁰ = 398062782451 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, 199031915513 + 199031915514.

It is an arithmetic number, because the mean of its divisors is an integer number (199031915514).

Almost surely, 2^398063831027 is an apocalyptic number.

398063831027 is a deficient number, since it is larger than the sum of its proper divisors (1).

398063831027 is an equidigital number, since it uses as much as digits as its factorization.

398063831027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 398063831027 in words is "three hundred ninety-eight billion, sixty-three million, eight hundred thirty-one thousand, twenty-seven".