984399 has 16 divisors (see below), whose sum is σ = 1448832. Its totient is φ = 590688.

The previous prime is 984397. The next prime is 984407. The reversal of 984399 is 993489.

It is not a de Polignac number, because 984399 - 2¹ = 984397 is a prime.

984399 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 984399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984391) 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 15 ways as a sum of consecutive naturals, for example, 1384 + ... + 1970.

It is an arithmetic number, because the mean of its divisors is an integer number (90552).

2⁹⁸⁴³⁹⁹ is an apocalyptic number.

984399 is a deficient number, since it is larger than the sum of its proper divisors (464433).

984399 is a wasteful number, since it uses less digits than its factorization.

984399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646.

The product of its digits is 69984, while the sum is 42.

The square root of 984399 is about 992.1688364386. The cubic root of 984399 is about 99.4772386342.

The spelling of 984399 in words is "nine hundred eighty-four thousand, three hundred ninety-nine".