398171041 has 2 divisors, whose sum is σ = 398171042. Its totient is φ = 398171040.

The previous prime is 398171027. The next prime is 398171047. The reversal of 398171041 is 140171893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288864016 + 109307025 = 16996^2 + 10455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398171041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398170988 and 398171006.

It is not a weakly prime, because it can be changed into another prime (398171047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199085520 + 199085521.

It is an arithmetic number, because the mean of its divisors is an integer number (199085521).

Almost surely, 2^398171041 is an apocalyptic number.

It is an amenable number.

398171041 is a deficient number, since it is larger than the sum of its proper divisors (1).

398171041 is an equidigital number, since it uses as much as digits as its factorization.

398171041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 398171041 is about 19954.2236381173. The cubic root of 398171041 is about 735.6815933531.

The spelling of 398171041 in words is "three hundred ninety-eight million, one hundred seventy-one thousand, forty-one".