409606 has 4 divisors (see below), whose sum is σ = 614412. Its totient is φ = 204802.

The previous prime is 409597. The next prime is 409609. The reversal of 409606 is 606904.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409609) by changing a digit.

409606 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102400 + ... + 102403.

It is an arithmetic number, because the mean of its divisors is an integer number (153603).

2⁴⁰⁹⁶⁰⁶ is an apocalyptic number.

409606 is a deficient number, since it is larger than the sum of its proper divisors (204806).

409606 is a wasteful number, since it uses less digits than its factorization.

409606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204805.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 409606 is about 640.0046874828. The cubic root of 409606 is about 74.2657839602.

The spelling of 409606 in words is "four hundred nine thousand, six hundred six".