409559 has 4 divisors (see below), whose sum is σ = 410904. Its totient is φ = 408216.

The previous prime is 409543. The next prime is 409573. The reversal of 409559 is 955904.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 409559 - 2⁴ = 409543 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29 + ... + 905.

It is an arithmetic number, because the mean of its divisors is an integer number (102726).

2⁴⁰⁹⁵⁵⁹ is an apocalyptic number.

409559 is a deficient number, since it is larger than the sum of its proper divisors (1345).

409559 is an equidigital number, since it uses as much as digits as its factorization.

409559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 409559 is about 639.9679679484. The cubic root of 409559 is about 74.2629433236.

The spelling of 409559 in words is "four hundred nine thousand, five hundred fifty-nine".