506385983 has 2 divisors, whose sum is σ = 506385984. Its totient is φ = 506385982.

The previous prime is 506385937. The next prime is 506386031. The reversal of 506385983 is 389583605.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506385983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506385923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253192991 + 253192992.

It is an arithmetic number, because the mean of its divisors is an integer number (253192992).

Almost surely, 2^506385983 is an apocalyptic number.

506385983 is a deficient number, since it is larger than the sum of its proper divisors (1).

506385983 is an equidigital number, since it uses as much as digits as its factorization.

506385983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 506385983 is about 22503.0216415485. The cubic root of 506385983 is about 797.0652802518.

The spelling of 506385983 in words is "five hundred six million, three hundred eighty-five thousand, nine hundred eighty-three".