398030117 has 2 divisors, whose sum is σ = 398030118. Its totient is φ = 398030116.

The previous prime is 398030099. The next prime is 398030119. The reversal of 398030117 is 711030893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340254916 + 57775201 = 18446^2 + 7601^2 .

It is a cyclic number.

It is not a de Polignac number, because 398030117 - 2¹² = 398026021 is a prime.

Together with 398030119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398030119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199015058 + 199015059.

It is an arithmetic number, because the mean of its divisors is an integer number (199015059).

Almost surely, 2^398030117 is an apocalyptic number.

It is an amenable number.

398030117 is a deficient number, since it is larger than the sum of its proper divisors (1).

398030117 is an equidigital number, since it uses as much as digits as its factorization.

398030117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 398030117 is about 19950.6921433819. The cubic root of 398030117 is about 735.5947902662.

The spelling of 398030117 in words is "three hundred ninety-eight million, thirty thousand, one hundred seventeen".