983789 has 2 divisors, whose sum is σ = 983790. Its totient is φ = 983788.

The previous prime is 983783. The next prime is 983791. The reversal of 983789 is 987389.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855625 + 128164 = 925^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 983789 - 2⁸ = 983533 is a prime.

Together with 983791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (983783) 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 as a sum of consecutive naturals, namely, 491894 + 491895.

It is an arithmetic number, because the mean of its divisors is an integer number (491895).

2⁹⁸³⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

983789 is a deficient number, since it is larger than the sum of its proper divisors (1).

983789 is an equidigital number, since it uses as much as digits as its factorization.

983789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 983789 is about 991.8613814440. The cubic root of 983789 is about 99.4566867869.

Subtracting 983789 from its reverse (987389), we obtain a square (3600 = 60²).

The spelling of 983789 in words is "nine hundred eighty-three thousand, seven hundred eighty-nine".