409494563 has 4 divisors (see below), whose sum is σ = 410610720. Its totient is φ = 408378408.

The previous prime is 409494557. The next prime is 409494571. The reversal of 409494563 is 365494904.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 409494563 - 2⁸ = 409494307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409494583) 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 in 3 ways as a sum of consecutive naturals, for example, 557528 + ... + 558261.

It is an arithmetic number, because the mean of its divisors is an integer number (102652680).

Almost surely, 2^409494563 is an apocalyptic number.

409494563 is a deficient number, since it is larger than the sum of its proper divisors (1116157).

409494563 is a wasteful number, since it uses less digits than its factorization.

409494563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116156.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 409494563 is about 20235.9720053177. The cubic root of 409494563 is about 742.5904845759.

The spelling of 409494563 in words is "four hundred nine million, four hundred ninety-four thousand, five hundred sixty-three".