5639983 has 2 divisors, whose sum is σ = 5639984. Its totient is φ = 5639982.

The previous prime is 5639981. The next prime is 5639989. The reversal of 5639983 is 3899365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5639983 - 2¹ = 5639981 is a prime.

Together with 5639981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5639981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2819991 + 2819992.

It is an arithmetic number, because the mean of its divisors is an integer number (2819992).

Almost surely, 2^5639983 is an apocalyptic number.

5639983 is a deficient number, since it is larger than the sum of its proper divisors (1).

5639983 is an equidigital number, since it uses as much as digits as its factorization.

5639983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The square root of 5639983 is about 2374.8648382592. The cubic root of 5639983 is about 178.0024302155.

It can be divided in two parts, 563998 and 3, that added together give a square (564001 = 751²).

The spelling of 5639983 in words is "five million, six hundred thirty-nine thousand, nine hundred eighty-three".