1984429 has 2 divisors, whose sum is σ = 1984430. Its totient is φ = 1984428.

The previous prime is 1984399. The next prime is 1984453. The reversal of 1984429 is 9244891.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1974025 + 10404 = 1405^2 + 102^2 .

It is a cyclic number.

It is not a de Polignac number, because 1984429 - 2⁵ = 1984397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1984459) 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 as a sum of consecutive naturals, namely, 992214 + 992215.

It is an arithmetic number, because the mean of its divisors is an integer number (992215).

2^1984429 is an apocalyptic number.

It is an amenable number.

1984429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984429 is an equidigital number, since it uses as much as digits as its factorization.

1984429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 1984429 is about 1408.6976254683. The cubic root of 1984429 is about 125.6642822460.

It can be divided in two parts, 19 and 84429, that added together give a palindrome (84448).

The spelling of 1984429 in words is "one million, nine hundred eighty-four thousand, four hundred twenty-nine".