398000117 has 2 divisors, whose sum is σ = 398000118. Its totient is φ = 398000116.

The previous prime is 398000101. The next prime is 398000129. The reversal of 398000117 is 711000893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373803556 + 24196561 = 19334^2 + 4919^2 .

It is a cyclic number.

It is not a de Polignac number, because 398000117 - 2⁴ = 398000101 is a prime.

It is equal to p_21235268 and since 398000117 and 21235268 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398000117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398030117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199000058 + 199000059.

It is an arithmetic number, because the mean of its divisors is an integer number (199000059).

Almost surely, 2^398000117 is an apocalyptic number.

It is an amenable number.

398000117 is a deficient number, since it is larger than the sum of its proper divisors (1).

398000117 is an equidigital number, since it uses as much as digits as its factorization.

398000117 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 29.

The square root of 398000117 is about 19949.9402755998. The cubic root of 398000117 is about 735.5763089192.

The spelling of 398000117 in words is "three hundred ninety-eight million, one hundred seventeen", and thus it is an aban number.