395391 has 4 divisors (see below), whose sum is σ = 527192. Its totient is φ = 263592.

The previous prime is 395383. The next prime is 395407. The reversal of 395391 is 193593.

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

It is not a de Polignac number, because 395391 - 2³ = 395383 is a prime.

It is a D-number.

It is a Duffinian number.

395391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395321) 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, 65896 + ... + 65901.

It is an arithmetic number, because the mean of its divisors is an integer number (131798).

2³⁹⁵³⁹¹ is an apocalyptic number.

395391 is a deficient number, since it is larger than the sum of its proper divisors (131801).

395391 is a wasteful number, since it uses less digits than its factorization.

395391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131800.

The product of its digits is 3645, while the sum is 30.

The square root of 395391 is about 628.8012404568. The cubic root of 395391 is about 73.3965410047.

The spelling of 395391 in words is "three hundred ninety-five thousand, three hundred ninety-one".