506982389 has 2 divisors, whose sum is σ = 506982390. Its totient is φ = 506982388.

The previous prime is 506982293. The next prime is 506982391. The reversal of 506982389 is 983289605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499880164 + 7102225 = 22358^2 + 2665^2 .

It is a cyclic number.

It is not a de Polignac number, because 506982389 - 2¹⁶ = 506916853 is a prime.

It is a super-2 number, since 2×506982389² = 514062285512294642, which contains 22 as substring.

Together with 506982391, 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 (506987389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253491194 + 253491195.

It is an arithmetic number, because the mean of its divisors is an integer number (253491195).

Almost surely, 2^506982389 is an apocalyptic number.

It is an amenable number.

506982389 is a deficient number, since it is larger than the sum of its proper divisors (1).

506982389 is an equidigital number, since it uses as much as digits as its factorization.

506982389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 506982389 is about 22516.2694290151. The cubic root of 506982389 is about 797.3780772264.

The spelling of 506982389 in words is "five hundred six million, nine hundred eighty-two thousand, three hundred eighty-nine".