398325401 has 2 divisors, whose sum is σ = 398325402. Its totient is φ = 398325400.

The previous prime is 398325331. The next prime is 398325409. The reversal of 398325401 is 104523893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270635401 + 127690000 = 16451^2 + 11300^2 .

It is an emirp because it is prime and its reverse (104523893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398325401 - 2¹⁴ = 398309017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (398325409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199162700 + 199162701.

It is an arithmetic number, because the mean of its divisors is an integer number (199162701).

Almost surely, 2^398325401 is an apocalyptic number.

It is an amenable number.

398325401 is a deficient number, since it is larger than the sum of its proper divisors (1).

398325401 is an equidigital number, since it uses as much as digits as its factorization.

398325401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 398325401 is about 19958.0911161363. The cubic root of 398325401 is about 735.7766489344.

The spelling of 398325401 in words is "three hundred ninety-eight million, three hundred twenty-five thousand, four hundred one".