382405 has 4 divisors (see below), whose sum is σ = 458892. Its totient is φ = 305920.

The previous prime is 382391. The next prime is 382427. The reversal of 382405 is 504283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504283 = 13 ⋅38791.

It can be written as a sum of positive squares in 2 ways, for example, as 43681 + 338724 = 209^2 + 582^2 .

It is not a de Polignac number, because 382405 - 2⁵ = 382373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38236 + ... + 38245.

It is an arithmetic number, because the mean of its divisors is an integer number (114723).

2³⁸²⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

382405 is a deficient number, since it is larger than the sum of its proper divisors (76487).

382405 is an equidigital number, since it uses as much as digits as its factorization.

382405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76486.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 382405 is about 618.3890361253. The cubic root of 382405 is about 72.5840483842.

Adding to 382405 its reverse (504283), we get a palindrome (886688).

It can be divided in two parts, 382 and 405, that added together give a palindrome (787).

The spelling of 382405 in words is "three hundred eighty-two thousand, four hundred five".