400983 has 16 divisors (see below), whose sum is σ = 604800. Its totient is φ = 234080.

The previous prime is 400963. The next prime is 400997. The reversal of 400983 is 389004.

It is not a de Polignac number, because 400983 - 2⁹ = 400471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400903) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 748 + ... + 1166.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2⁴⁰⁰⁹⁸³ is an apocalyptic number.

400983 is a deficient number, since it is larger than the sum of its proper divisors (203817).

400983 is a wasteful number, since it uses less digits than its factorization.

400983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 400983 is about 633.2321849053. The cubic root of 400983 is about 73.7409373140.

Adding to 400983 its reverse (389004), we get a palindrome (789987).

The spelling of 400983 in words is "four hundred thousand, nine hundred eighty-three".