400982 has 12 divisors (see below), whose sum is σ = 630420. Its totient is φ = 191268.

The previous prime is 400963. The next prime is 400997. The reversal of 400982 is 289004.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 869 + ... + 1247.

It is an arithmetic number, because the mean of its divisors is an integer number (52535).

2⁴⁰⁰⁹⁸² is an apocalyptic number.

400982 is a deficient number, since it is larger than the sum of its proper divisors (229438).

400982 is a wasteful number, since it uses less digits than its factorization.

400982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 400982 is about 633.2313953051. The cubic root of 400982 is about 73.7408760139.

Adding to 400982 its reverse (289004), we get a palindrome (689986).

The spelling of 400982 in words is "four hundred thousand, nine hundred eighty-two".