409481663 has 2 divisors, whose sum is σ = 409481664. Its totient is φ = 409481662.

The previous prime is 409481659. The next prime is 409481671. The reversal of 409481663 is 366184904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409481663 - 2² = 409481659 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409481663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409481693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204740831 + 204740832.

It is an arithmetic number, because the mean of its divisors is an integer number (204740832).

Almost surely, 2^409481663 is an apocalyptic number.

409481663 is a deficient number, since it is larger than the sum of its proper divisors (1).

409481663 is an equidigital number, since it uses as much as digits as its factorization.

409481663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 409481663 is about 20235.6532634852. The cubic root of 409481663 is about 742.5826867371.

The spelling of 409481663 in words is "four hundred nine million, four hundred eighty-one thousand, six hundred sixty-three".