1983217 has 4 divisors (see below), whose sum is σ = 1994356. Its totient is φ = 1972080.

The previous prime is 1983197. The next prime is 1983227. The reversal of 1983217 is 7123891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 467856 + 1515361 = 684^2 + 1231^2 .

It is a cyclic number.

It is not a de Polignac number, because 1983217 - 2¹¹ = 1981169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1983227) 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, 5298 + ... + 5659.

It is an arithmetic number, because the mean of its divisors is an integer number (498589).

2^1983217 is an apocalyptic number.

It is an amenable number.

1983217 is a deficient number, since it is larger than the sum of its proper divisors (11139).

1983217 is a wasteful number, since it uses less digits than its factorization.

1983217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11138.

The product of its digits is 3024, while the sum is 31.

The square root of 1983217 is about 1408.2673751813. The cubic root of 1983217 is about 125.6386936716.

The spelling of 1983217 in words is "one million, nine hundred eighty-three thousand, two hundred seventeen".