984189 has 4 divisors (see below), whose sum is σ = 1312256. Its totient is φ = 656124.

The previous prime is 984167. The next prime is 984199. The reversal of 984189 is 981489.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 981489 = 3 ⋅327163.

It is not a de Polignac number, because 984189 - 2¹⁶ = 918653 is a prime.

It is a D-number.

It is a Duffinian number.

984189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984119) 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, 164029 + ... + 164034.

It is an arithmetic number, because the mean of its divisors is an integer number (328064).

2⁹⁸⁴¹⁸⁹ is an apocalyptic number.

It is an amenable number.

984189 is a deficient number, since it is larger than the sum of its proper divisors (328067).

984189 is a wasteful number, since it uses less digits than its factorization.

984189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328066.

The product of its digits is 20736, while the sum is 39.

The square root of 984189 is about 992.0630020316. The cubic root of 984189 is about 99.4701643666.

The spelling of 984189 in words is "nine hundred eighty-four thousand, one hundred eighty-nine".