395617 has 4 divisors (see below), whose sum is σ = 399636. Its totient is φ = 391600.

The previous prime is 395611. The next prime is 395621. The reversal of 395617 is 716593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 716593 = 383 ⋅1871.

It can be written as a sum of positive squares in 2 ways, for example, as 355216 + 40401 = 596^2 + 201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395611) 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, 1858 + ... + 2059.

It is an arithmetic number, because the mean of its divisors is an integer number (99909).

2³⁹⁵⁶¹⁷ is an apocalyptic number.

It is an amenable number.

395617 is a deficient number, since it is larger than the sum of its proper divisors (4019).

395617 is a wasteful number, since it uses less digits than its factorization.

395617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018.

The product of its digits is 5670, while the sum is 31.

The square root of 395617 is about 628.9809218092. The cubic root of 395617 is about 73.4105224887.

The spelling of 395617 in words is "three hundred ninety-five thousand, six hundred seventeen".