489528839 has 2 divisors, whose sum is σ = 489528840. Its totient is φ = 489528838.

The previous prime is 489528779. The next prime is 489528847. The reversal of 489528839 is 938825984.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489528839 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489528859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244764419 + 244764420.

It is an arithmetic number, because the mean of its divisors is an integer number (244764420).

Almost surely, 2^489528839 is an apocalyptic number.

489528839 is a deficient number, since it is larger than the sum of its proper divisors (1).

489528839 is an equidigital number, since it uses as much as digits as its factorization.

489528839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 56.

The square root of 489528839 is about 22125.2986194537. The cubic root of 489528839 is about 788.1207476204.

The spelling of 489528839 in words is "four hundred eighty-nine million, five hundred twenty-eight thousand, eight hundred thirty-nine".