398882805593 has 2 divisors, whose sum is σ = 398882805594. Its totient is φ = 398882805592.

The previous prime is 398882805557. The next prime is 398882805623. The reversal of 398882805593 is 395508288893.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 366736825744 + 32145979849 = 605588^2 + 179293^2 .

It is an emirp because it is prime and its reverse (395508288893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398882805593 - 2¹⁰ = 398882804569 is a prime.

It is not a weakly prime, because it can be changed into another prime (398884805593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199441402796 + 199441402797.

It is an arithmetic number, because the mean of its divisors is an integer number (199441402797).

Almost surely, 2^398882805593 is an apocalyptic number.

It is an amenable number.

398882805593 is a deficient number, since it is larger than the sum of its proper divisors (1).

398882805593 is an equidigital number, since it uses as much as digits as its factorization.

398882805593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 149299200, while the sum is 68.

The spelling of 398882805593 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, eight hundred five thousand, five hundred ninety-three".