489528869 has 2 divisors, whose sum is σ = 489528870. Its totient is φ = 489528868.

The previous prime is 489528859. The next prime is 489528877. The reversal of 489528869 is 968825984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255040900 + 234487969 = 15970^2 + 15313^2 .

It is a cyclic number.

It is not a de Polignac number, because 489528869 - 2¹² = 489524773 is a prime.

It is a super-2 number, since 2×489528869² = 479277027168838322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489528839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244764434 + 244764435.

It is an arithmetic number, because the mean of its divisors is an integer number (244764435).

Almost surely, 2^489528869 is an apocalyptic number.

It is an amenable number.

489528869 is a deficient number, since it is larger than the sum of its proper divisors (1).

489528869 is an equidigital number, since it uses as much as digits as its factorization.

489528869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9953280, while the sum is 59.

The square root of 489528869 is about 22125.2992974106. The cubic root of 489528869 is about 788.1207637199.

The spelling of 489528869 in words is "four hundred eighty-nine million, five hundred twenty-eight thousand, eight hundred sixty-nine".