398798371 has 2 divisors, whose sum is σ = 398798372. Its totient is φ = 398798370.

The previous prime is 398798347. The next prime is 398798423. The reversal of 398798371 is 173897893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398798371 - 2⁵ = 398798339 is a prime.

It is not a weakly prime, because it can be changed into another prime (398793371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199399185 + 199399186.

It is an arithmetic number, because the mean of its divisors is an integer number (199399186).

Almost surely, 2^398798371 is an apocalyptic number.

398798371 is a deficient number, since it is larger than the sum of its proper divisors (1).

398798371 is an equidigital number, since it uses as much as digits as its factorization.

398798371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 55.

The square root of 398798371 is about 19969.9366799196. The cubic root of 398798371 is about 736.0677531702.

The spelling of 398798371 in words is "three hundred ninety-eight million, seven hundred ninety-eight thousand, three hundred seventy-one".