409964447 has 2 divisors, whose sum is σ = 409964448. Its totient is φ = 409964446.

The previous prime is 409964441. The next prime is 409964507. The reversal of 409964447 is 744469904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409964447 - 2⁶ = 409964383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409964441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204982223 + 204982224.

It is an arithmetic number, because the mean of its divisors is an integer number (204982224).

Almost surely, 2^409964447 is an apocalyptic number.

409964447 is a deficient number, since it is larger than the sum of its proper divisors (1).

409964447 is an equidigital number, since it uses as much as digits as its factorization.

409964447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 409964447 is about 20247.5787935249. The cubic root of 409964447 is about 742.8744102090.

The spelling of 409964447 in words is "four hundred nine million, nine hundred sixty-four thousand, four hundred forty-seven".