403982 has 8 divisors (see below), whose sum is σ = 614496. Its totient is φ = 199152.

The previous prime is 403981. The next prime is 403993. The reversal of 403982 is 289304.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403981) 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, 1238 + ... + 1529.

It is an arithmetic number, because the mean of its divisors is an integer number (76812).

2⁴⁰³⁹⁸² is an apocalyptic number.

403982 is a deficient number, since it is larger than the sum of its proper divisors (210514).

403982 is a wasteful number, since it uses less digits than its factorization.

403982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 403982 is about 635.5957834977. The cubic root of 403982 is about 73.9243199986.

Multiplying 403982 by its product of nonzero digits (1728), we get a palindrome (698080896).

The spelling of 403982 in words is "four hundred three thousand, nine hundred eighty-two".