409706 has 12 divisors (see below), whose sum is σ = 675906. Its totient is φ = 186120.

The previous prime is 409693. The next prime is 409709. The reversal of 409706 is 607904.

It can be written as a sum of positive squares in only one way, i.e., 366025 + 43681 = 605^2 + 209^2 .

It is not an unprimeable number, because it can be changed into a prime (409709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 605 + ... + 1088.

2⁴⁰⁹⁷⁰⁶ is an apocalyptic number.

409706 is a deficient number, since it is larger than the sum of its proper divisors (266200).

409706 is a wasteful number, since it uses less digits than its factorization.

409706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717 (or 1706 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 409706 is about 640.0828071430. The cubic root of 409706 is about 74.2718271448.

The spelling of 409706 in words is "four hundred nine thousand, seven hundred six".