409244047 has 2 divisors, whose sum is σ = 409244048. Its totient is φ = 409244046.

The previous prime is 409244039. The next prime is 409244117. The reversal of 409244047 is 740442904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409244047 - 2³ = 409244039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409044047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204622023 + 204622024.

It is an arithmetic number, because the mean of its divisors is an integer number (204622024).

Almost surely, 2^409244047 is an apocalyptic number.

409244047 is a deficient number, since it is larger than the sum of its proper divisors (1).

409244047 is an equidigital number, since it uses as much as digits as its factorization.

409244047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 409244047 is about 20229.7811901167. The cubic root of 409244047 is about 742.4390224537.

The spelling of 409244047 in words is "four hundred nine million, two hundred forty-four thousand, forty-seven".