398110117 has 2 divisors, whose sum is σ = 398110118. Its totient is φ = 398110116.

The previous prime is 398110093. The next prime is 398110129. The reversal of 398110117 is 711011893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380796196 + 17313921 = 19514^2 + 4161^2 .

It is a cyclic number.

It is not a de Polignac number, because 398110117 - 2⁷ = 398109989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398110147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199055058 + 199055059.

It is an arithmetic number, because the mean of its divisors is an integer number (199055059).

Almost surely, 2^398110117 is an apocalyptic number.

It is an amenable number.

398110117 is a deficient number, since it is larger than the sum of its proper divisors (1).

398110117 is an equidigital number, since it uses as much as digits as its factorization.

398110117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 31.

The square root of 398110117 is about 19952.6969856208. The cubic root of 398110117 is about 735.6440693187.

The spelling of 398110117 in words is "three hundred ninety-eight million, one hundred ten thousand, one hundred seventeen".