1983559 has 2 divisors, whose sum is σ = 1983560. Its totient is φ = 1983558.

The previous prime is 1983523. The next prime is 1983563. The reversal of 1983559 is 9553891.

It is a strong prime.

It is an emirp because it is prime and its reverse (9553891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1983559 - 2¹³ = 1975367 is a prime.

It is a Chen prime.

1983559 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1983599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991779 + 991780.

It is an arithmetic number, because the mean of its divisors is an integer number (991780).

2^1983559 is an apocalyptic number.

1983559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983559 is an equidigital number, since it uses as much as digits as its factorization.

1983559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 40.

The square root of 1983559 is about 1408.3887957521. The cubic root of 1983559 is about 125.6459152655.

The spelling of 1983559 in words is "one million, nine hundred eighty-three thousand, five hundred fifty-nine".