408389000189 has 2 divisors, whose sum is σ = 408389000190. Its totient is φ = 408389000188.

The previous prime is 408389000143. The next prime is 408389000191. The reversal of 408389000189 is 981000983804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282111824164 + 126277176025 = 531142^2 + 355355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408389000189 is a prime.

Together with 408389000191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408389008189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204194500094 + 204194500095.

It is an arithmetic number, because the mean of its divisors is an integer number (204194500095).

Almost surely, 2^408389000189 is an apocalyptic number.

It is an amenable number.

408389000189 is a deficient number, since it is larger than the sum of its proper divisors (1).

408389000189 is an equidigital number, since it uses as much as digits as its factorization.

408389000189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 408389000189 in words is "four hundred eight billion, three hundred eighty-nine million, one hundred eighty-nine", and thus it is an aban number.