395569 has 4 divisors (see below), whose sum is σ = 396900. Its totient is φ = 394240.

The previous prime is 395543. The next prime is 395581. The reversal of 395569 is 965593.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 965593 = 569 ⋅1697.

It can be written as a sum of positive squares in 2 ways, for example, as 150544 + 245025 = 388^2 + 495^2 .

It is a cyclic number.

It is not a de Polignac number, because 395569 - 2⁵ = 395537 is a prime.

It is a super-2 number, since 2×395569² = 312949667522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395509) 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 3 ways as a sum of consecutive naturals, for example, 9 + ... + 889.

It is an arithmetic number, because the mean of its divisors is an integer number (99225).

2³⁹⁵⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

395569 is a deficient number, since it is larger than the sum of its proper divisors (1331).

395569 is an equidigital number, since it uses as much as digits as its factorization.

395569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330.

The product of its digits is 36450, while the sum is 37.

The square root of 395569 is about 628.9427636916. The cubic root of 395569 is about 73.4075534154.

The spelling of 395569 in words is "three hundred ninety-five thousand, five hundred sixty-nine".