398715001 has 2 divisors, whose sum is σ = 398715002. Its totient is φ = 398715000.

The previous prime is 398714989. The next prime is 398715013. The reversal of 398715001 is 100517893.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (398714989) and next prime (398715013).

It can be written as a sum of positive squares in only one way, i.e., 370370025 + 28344976 = 19245^2 + 5324^2 .

It is a cyclic number.

It is not a de Polignac number, because 398715001 - 2⁵ = 398714969 is a prime.

It is not a weakly prime, because it can be changed into another prime (398715061) 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, 199357500 + 199357501.

It is an arithmetic number, because the mean of its divisors is an integer number (199357501).

Almost surely, 2^398715001 is an apocalyptic number.

It is an amenable number.

398715001 is a deficient number, since it is larger than the sum of its proper divisors (1).

398715001 is an equidigital number, since it uses as much as digits as its factorization.

398715001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 398715001 is about 19967.8491831244. The cubic root of 398715001 is about 736.0164572023.

The spelling of 398715001 in words is "three hundred ninety-eight million, seven hundred fifteen thousand, one".