409417009 has 4 divisors (see below), whose sum is σ = 409519204. Its totient is φ = 409314816.

The previous prime is 409417003. The next prime is 409417039. The reversal of 409417009 is 900714904.

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

It can be written as a sum of positive squares in 2 ways, for example, as 383376400 + 26040609 = 19580^2 + 5103^2 .

It is a cyclic number.

It is not a de Polignac number, because 409417009 - 2⁵ = 409416977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409417003) 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, 44832 + ... + 53185.

It is an arithmetic number, because the mean of its divisors is an integer number (102379801).

Almost surely, 2^409417009 is an apocalyptic number.

It is an amenable number.

409417009 is a deficient number, since it is larger than the sum of its proper divisors (102195).

409417009 is an equidigital number, since it uses as much as digits as its factorization.

409417009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102194.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 409417009 is about 20234.0556735421. The cubic root of 409417009 is about 742.5436019848.

The spelling of 409417009 in words is "four hundred nine million, four hundred seventeen thousand, nine".