395669 has 4 divisors (see below), whose sum is σ = 412896. Its totient is φ = 378444.

The previous prime is 395657. The next prime is 395671. The reversal of 395669 is 966593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 966593 = 73 ⋅13241.

It is a cyclic number.

It is not a de Polignac number, because 395669 - 2¹⁶ = 330133 is a prime.

It is a super-2 number, since 2×395669² = 313107915122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395069) 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, 8579 + ... + 8624.

It is an arithmetic number, because the mean of its divisors is an integer number (103224).

2³⁹⁵⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

395669 is a deficient number, since it is larger than the sum of its proper divisors (17227).

395669 is a wasteful number, since it uses less digits than its factorization.

395669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17226.

The product of its digits is 43740, while the sum is 38.

The square root of 395669 is about 629.0222571579. The cubic root of 395669 is about 73.4137387138.

The spelling of 395669 in words is "three hundred ninety-five thousand, six hundred sixty-nine".