409509059 has 4 divisors (see below), whose sum is σ = 410118216. Its totient is φ = 408899904.

The previous prime is 409509041. The next prime is 409509083. The reversal of 409509059 is 950905904.

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 409509059 - 2¹⁶ = 409443523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409500059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303569 + ... + 304914.

It is an arithmetic number, because the mean of its divisors is an integer number (102529554).

Almost surely, 2^409509059 is an apocalyptic number.

409509059 is a deficient number, since it is larger than the sum of its proper divisors (609157).

409509059 is an equidigital number, since it uses as much as digits as its factorization.

409509059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609156.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 409509059 is about 20236.3301761955. The cubic root of 409509059 is about 742.5992469752.

The spelling of 409509059 in words is "four hundred nine million, five hundred nine thousand, fifty-nine".