396505 has 4 divisors (see below), whose sum is σ = 475812. Its totient is φ = 317200.

The previous prime is 396479. The next prime is 396509. The reversal of 396505 is 505693.

It is a happy number.

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 233289 + 163216 = 483^2 + 404^2 .

It is not a de Polignac number, because 396505 - 2⁷ = 396377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396509) 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, 39646 + ... + 39655.

It is an arithmetic number, because the mean of its divisors is an integer number (118953).

2³⁹⁶⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

396505 is a deficient number, since it is larger than the sum of its proper divisors (79307).

396505 is an equidigital number, since it uses as much as digits as its factorization.

396505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79306.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 396505 is about 629.6864298998. The cubic root of 396505 is about 73.4654070789.

The spelling of 396505 in words is "three hundred ninety-six thousand, five hundred five".