398111473 has 2 divisors, whose sum is σ = 398111474. Its totient is φ = 398111472.

The previous prime is 398111471. The next prime is 398111477. The reversal of 398111473 is 374111893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 376049664 + 22061809 = 19392^2 + 4697^2 .

It is an emirp because it is prime and its reverse (374111893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398111473 - 2¹ = 398111471 is a prime.

Together with 398111471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (398111471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199055736 + 199055737.

It is an arithmetic number, because the mean of its divisors is an integer number (199055737).

Almost surely, 2^398111473 is an apocalyptic number.

It is an amenable number.

398111473 is a deficient number, since it is larger than the sum of its proper divisors (1).

398111473 is an equidigital number, since it uses as much as digits as its factorization.

398111473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 398111473 is about 19952.7309659605. The cubic root of 398111473 is about 735.6449045417.

The spelling of 398111473 in words is "three hundred ninety-eight million, one hundred eleven thousand, four hundred seventy-three".