395405 has 8 divisors (see below), whose sum is σ = 489984. Its totient is φ = 306000.

The previous prime is 395383. The next prime is 395407. The reversal of 395405 is 504593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 395405 - 2¹⁸ = 133261 is a prime.

It is a super-2 number, since 2×395405² = 312690228050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 395405.

It is not an unprimeable number, because it can be changed into a prime (395407) 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 7 ways as a sum of consecutive naturals, for example, 1121 + ... + 1430.

It is an arithmetic number, because the mean of its divisors is an integer number (61248).

2³⁹⁵⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

395405 is a deficient number, since it is larger than the sum of its proper divisors (94579).

395405 is a wasteful number, since it uses less digits than its factorization.

395405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 395405 is about 628.8123726518. The cubic root of 395405 is about 73.3974072691.

Adding to 395405 its reverse (504593), we get a palindrome (899998).

The spelling of 395405 in words is "three hundred ninety-five thousand, four hundred five".