1983924 has 18 divisors (see below), whose sum is σ = 5015010. Its totient is φ = 661296.

The previous prime is 1983913. The next prime is 1983929. The reversal of 1983924 is 4293891.

It can be written as a sum of positive squares in only one way, i.e., 1904400 + 79524 = 1380^2 + 282^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 55109 = 1983924 / (1 + 9 + 8 + 3 + 9 + 2 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983929) 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 5 ways as a sum of consecutive naturals, for example, 27519 + ... + 27590.

2^1983924 is an apocalyptic number.

It is an amenable number.

1983924 is an abundant number, since it is smaller than the sum of its proper divisors (3031086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1983924 is a wasteful number, since it uses less digits than its factorization.

1983924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55119 (or 55114 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1983924 is about 1408.5183704872. The cubic root of 1983924 is about 125.6536216066.

The spelling of 1983924 in words is "one million, nine hundred eighty-three thousand, nine hundred twenty-four".