396609 has 8 divisors (see below), whose sum is σ = 536352. Its totient is φ = 260640.

The previous prime is 396601. The next prime is 396619. The reversal of 396609 is 906693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 396609 - 2³ = 396601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396609.

It is not an unprimeable number, because it can be changed into a prime (396601) 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 7 ways as a sum of consecutive naturals, for example, 687 + ... + 1124.

It is an arithmetic number, because the mean of its divisors is an integer number (67044).

2³⁹⁶⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

396609 is a deficient number, since it is larger than the sum of its proper divisors (139743).

396609 is a wasteful number, since it uses less digits than its factorization.

396609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 396609 is about 629.7690052710. The cubic root of 396609 is about 73.4718296414.

The spelling of 396609 in words is "three hundred ninety-six thousand, six hundred nine".