395215 has 4 divisors (see below), whose sum is σ = 474264. Its totient is φ = 316168.

The previous prime is 395201. The next prime is 395231. The reversal of 395215 is 512593.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395215 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 395215.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39517 + ... + 39526.

It is an arithmetic number, because the mean of its divisors is an integer number (118566).

2³⁹⁵²¹⁵ is an apocalyptic number.

395215 is a deficient number, since it is larger than the sum of its proper divisors (79049).

395215 is an equidigital number, since it uses as much as digits as its factorization.

395215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79048.

The product of its digits is 1350, while the sum is 25.

The square root of 395215 is about 628.6612760462. The cubic root of 395215 is about 73.3856490788.

The spelling of 395215 in words is "three hundred ninety-five thousand, two hundred fifteen".