395609 has 4 divisors (see below), whose sum is σ = 405300. Its totient is φ = 385920.

The previous prime is 395597. The next prime is 395611. The reversal of 395609 is 906593.

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 29584 + 366025 = 172^2 + 605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395309) 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, 4784 + ... + 4865.

It is an arithmetic number, because the mean of its divisors is an integer number (101325).

2³⁹⁵⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

395609 is a deficient number, since it is larger than the sum of its proper divisors (9691).

395609 is an equidigital number, since it uses as much as digits as its factorization.

395609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9690.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 395609 is about 628.9745622837. The cubic root of 395609 is about 73.4100276598.

Adding to 395609 its sum of digits (32), we get a square (395641 = 629²).

The spelling of 395609 in words is "three hundred ninety-five thousand, six hundred nine".