1984243 has 4 divisors (see below), whose sum is σ = 2009440. Its totient is φ = 1959048.

The previous prime is 1984211. The next prime is 1984247. The reversal of 1984243 is 3424891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3424891 = 59 ⋅58049.

It is a cyclic number.

It is not a de Polignac number, because 1984243 - 2⁵ = 1984211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1984247) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 12480 + ... + 12637.

It is an arithmetic number, because the mean of its divisors is an integer number (502360).

2^1984243 is an apocalyptic number.

1984243 is a deficient number, since it is larger than the sum of its proper divisors (25197).

1984243 is an equidigital number, since it uses as much as digits as its factorization.

1984243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25196.

The product of its digits is 6912, while the sum is 31.

The square root of 1984243 is about 1408.6316054952. The cubic root of 1984243 is about 125.6603559635.

The spelling of 1984243 in words is "one million, nine hundred eighty-four thousand, two hundred forty-three".