1984798 has 8 divisors (see below), whose sum is σ = 2983608. Its totient is φ = 990264.

The previous prime is 1984793. The next prime is 1984799. The reversal of 1984798 is 8974891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984793) 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 3 ways as a sum of consecutive naturals, for example, 640 + ... + 2092.

It is an arithmetic number, because the mean of its divisors is an integer number (372951).

2^1984798 is an apocalyptic number.

1984798 is a deficient number, since it is larger than the sum of its proper divisors (998810).

1984798 is a wasteful number, since it uses less digits than its factorization.

1984798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138.

The product of its digits is 145152, while the sum is 46.

The square root of 1984798 is about 1408.8285914191. The cubic root of 1984798 is about 125.6720707579.

The spelling of 1984798 in words is "one million, nine hundred eighty-four thousand, seven hundred ninety-eight".