409225769 has 2 divisors, whose sum is σ = 409225770. Its totient is φ = 409225768.

The previous prime is 409225763. The next prime is 409225783. The reversal of 409225769 is 967522904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406627225 + 2598544 = 20165^2 + 1612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409225769 is a prime.

It is a super-2 number, since 2×409225769² = 334931460027282722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (409225763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204612884 + 204612885.

It is an arithmetic number, because the mean of its divisors is an integer number (204612885).

Almost surely, 2^409225769 is an apocalyptic number.

It is an amenable number.

409225769 is a deficient number, since it is larger than the sum of its proper divisors (1).

409225769 is an equidigital number, since it uses as much as digits as its factorization.

409225769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 409225769 is about 20229.3294253665. The cubic root of 409225769 is about 742.4279691449.

The spelling of 409225769 in words is "four hundred nine million, two hundred twenty-five thousand, seven hundred sixty-nine".