409117 has 4 divisors (see below), whose sum is σ = 410400. Its totient is φ = 407836.

The previous prime is 409099. The next prime is 409121. The reversal of 409117 is 711904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409177) 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, 258 + ... + 940.

It is an arithmetic number, because the mean of its divisors is an integer number (102600).

2⁴⁰⁹¹¹⁷ is an apocalyptic number.

It is an amenable number.

409117 is a deficient number, since it is larger than the sum of its proper divisors (1283).

409117 is an equidigital number, since it uses as much as digits as its factorization.

409117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 409117 is about 639.6225449435. The cubic root of 409117 is about 74.2362186139.

The spelling of 409117 in words is "four hundred nine thousand, one hundred seventeen".