984109 has 4 divisors (see below), whose sum is σ = 1124704. Its totient is φ = 843516.

The previous prime is 984091. The next prime is 984119. The reversal of 984109 is 901489.

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.

It is a cyclic number.

It is not a de Polignac number, because 984109 - 2⁹ = 983597 is a prime.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70287 + ... + 70300.

It is an arithmetic number, because the mean of its divisors is an integer number (281176).

2⁹⁸⁴¹⁰⁹ is an apocalyptic number.

It is an amenable number.

984109 is a deficient number, since it is larger than the sum of its proper divisors (140595).

984109 is a wasteful number, since it uses less digits than its factorization.

984109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140594.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 984109 is about 992.0226811923. The cubic root of 984109 is about 99.4674691429.

The spelling of 984109 in words is "nine hundred eighty-four thousand, one hundred nine".