1984239 has 6 divisors (see below), whose sum is σ = 2866136. Its totient is φ = 1322820.

The previous prime is 1984211. The next prime is 1984247. The reversal of 1984239 is 9324891.

It is not a de Polignac number, because 1984239 - 2¹¹ = 1982191 is a prime.

It is a Duffinian number.

1984239 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110227 + ... + 110244.

2^1984239 is an apocalyptic number.

1984239 is a deficient number, since it is larger than the sum of its proper divisors (881897).

1984239 is a wasteful number, since it uses less digits than its factorization.

1984239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220477 (or 220474 counting only the distinct ones).

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

The square root of 1984239 is about 1408.6301856769. The cubic root of 1984239 is about 125.6602715246.

It can be divided in two parts, 19842 and 39, that added together give a square (19881 = 141²).

The spelling of 1984239 in words is "one million, nine hundred eighty-four thousand, two hundred thirty-nine".