983609 has 8 divisors (see below), whose sum is σ = 1083360. Its totient is φ = 892980.

The previous prime is 983597. The next prime is 983617. The reversal of 983609 is 906389.

It is a de Polignac number, because none of the positive numbers 2^k-983609 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 7 and base 15.

It is not an unprimeable number, because it can be changed into a prime (983659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962 + ... + 1700.

It is an arithmetic number, because the mean of its divisors is an integer number (135420).

2⁹⁸³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

983609 is a deficient number, since it is larger than the sum of its proper divisors (99751).

983609 is an equidigital number, since it uses as much as digits as its factorization.

983609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 983609 is about 991.7706388072. The cubic root of 983609 is about 99.4506206841.

The spelling of 983609 in words is "nine hundred eighty-three thousand, six hundred nine".