409061563 has 2 divisors, whose sum is σ = 409061564. Its totient is φ = 409061562.

The previous prime is 409061561. The next prime is 409061581. The reversal of 409061563 is 365160904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409061563 - 2¹ = 409061561 is a prime.

Together with 409061561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (409061561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204530781 + 204530782.

It is an arithmetic number, because the mean of its divisors is an integer number (204530782).

Almost surely, 2^409061563 is an apocalyptic number.

409061563 is a deficient number, since it is larger than the sum of its proper divisors (1).

409061563 is an equidigital number, since it uses as much as digits as its factorization.

409061563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 409061563 is about 20225.2704061034. The cubic root of 409061563 is about 742.3286536032.

The spelling of 409061563 in words is "four hundred nine million, sixty-one thousand, five hundred sixty-three".