1984438 has 4 divisors (see below), whose sum is σ = 2976660. Its totient is φ = 992218.

The previous prime is 1984429. The next prime is 1984453. The reversal of 1984438 is 8344891.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1984397 and 1984406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496108 + ... + 496111.

It is an arithmetic number, because the mean of its divisors is an integer number (744165).

2^1984438 is an apocalyptic number.

1984438 is a deficient number, since it is larger than the sum of its proper divisors (992222).

1984438 is an equidigital number, since it uses as much as digits as its factorization.

1984438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992221.

The product of its digits is 27648, while the sum is 37.

The square root of 1984438 is about 1408.7008199046. The cubic root of 1984438 is about 125.6644722212.

The spelling of 1984438 in words is "one million, nine hundred eighty-four thousand, four hundred thirty-eight".