1998944 has 12 divisors (see below), whose sum is σ = 3935484. Its totient is φ = 999456.

The previous prime is 1998943. The next prime is 1998947. The reversal of 1998944 is 4498991.

1998944 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1998895 and 1998904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31202 + ... + 31265.

It is an arithmetic number, because the mean of its divisors is an integer number (327957).

2^1998944 is an apocalyptic number.

It is an amenable number.

1998944 is a deficient number, since it is larger than the sum of its proper divisors (1936540).

1998944 is an equidigital number, since it uses as much as digits as its factorization.

1998944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62477 (or 62469 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 1998944 is about 1413.8401606971. The cubic root of 1998944 is about 125.9699264751.

The spelling of 1998944 in words is "one million, nine hundred ninety-eight thousand, nine hundred forty-four".