398606573 has 2 divisors, whose sum is σ = 398606574. Its totient is φ = 398606572.

The previous prime is 398606563. The next prime is 398606591. The reversal of 398606573 is 375606893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311240164 + 87366409 = 17642^2 + 9347^2 .

It is an emirp because it is prime and its reverse (375606893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398606573 - 2¹⁰ = 398605549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398606503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199303286 + 199303287.

It is an arithmetic number, because the mean of its divisors is an integer number (199303287).

Almost surely, 2^398606573 is an apocalyptic number.

It is an amenable number.

398606573 is a deficient number, since it is larger than the sum of its proper divisors (1).

398606573 is an equidigital number, since it uses as much as digits as its factorization.

398606573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 398606573 is about 19965.1339339359. The cubic root of 398606573 is about 735.9497328274.

The spelling of 398606573 in words is "three hundred ninety-eight million, six hundred six thousand, five hundred seventy-three".