398561183 has 2 divisors, whose sum is σ = 398561184. Its totient is φ = 398561182.

The previous prime is 398561167. The next prime is 398561201. The reversal of 398561183 is 381165893.

It is a weak prime.

It is an emirp because it is prime and its reverse (381165893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398561183 - 2⁴ = 398561167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398569183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199280591 + 199280592.

It is an arithmetic number, because the mean of its divisors is an integer number (199280592).

Almost surely, 2^398561183 is an apocalyptic number.

398561183 is a deficient number, since it is larger than the sum of its proper divisors (1).

398561183 is an equidigital number, since it uses as much as digits as its factorization.

398561183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 44.

The square root of 398561183 is about 19963.9971699056. The cubic root of 398561183 is about 735.9217971562.

The spelling of 398561183 in words is "three hundred ninety-eight million, five hundred sixty-one thousand, one hundred eighty-three".