400382 has 4 divisors (see below), whose sum is σ = 600576. Its totient is φ = 200190.

The previous prime is 400381. The next prime is 400391. The reversal of 400382 is 283004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 400382.

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 400382.

It is not an unprimeable number, because it can be changed into a prime (400381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100094 + ... + 100097.

It is an arithmetic number, because the mean of its divisors is an integer number (150144).

2⁴⁰⁰³⁸² is an apocalyptic number.

400382 is a deficient number, since it is larger than the sum of its proper divisors (200194).

400382 is a wasteful number, since it uses less digits than its factorization.

400382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200193.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 400382 is about 632.7574574827. The cubic root of 400382 is about 73.7040775108.

Adding to 400382 its reverse (283004), we get a palindrome (683386).

The spelling of 400382 in words is "four hundred thousand, three hundred eighty-two".