409828189 has 2 divisors, whose sum is σ = 409828190. Its totient is φ = 409828188.

The previous prime is 409828147. The next prime is 409828207. The reversal of 409828189 is 981828904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388760089 + 21068100 = 19717^2 + 4590^2 .

It is a cyclic number.

It is not a de Polignac number, because 409828189 - 2¹¹ = 409826141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409820189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204914094 + 204914095.

It is an arithmetic number, because the mean of its divisors is an integer number (204914095).

Almost surely, 2^409828189 is an apocalyptic number.

It is an amenable number.

409828189 is a deficient number, since it is larger than the sum of its proper divisors (1).

409828189 is an equidigital number, since it uses as much as digits as its factorization.

409828189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 409828189 is about 20244.2137165166. The cubic root of 409828189 is about 742.7920991708.

The spelling of 409828189 in words is "four hundred nine million, eight hundred twenty-eight thousand, one hundred eighty-nine".