489075869 has 2 divisors, whose sum is σ = 489075870. Its totient is φ = 489075868.

The previous prime is 489075803. The next prime is 489075877. The reversal of 489075869 is 968570984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303108100 + 185967769 = 17410^2 + 13637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489075869 is a prime.

It is a super-2 number, since 2×489075869² = 478390411276210322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489074869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244537934 + 244537935.

It is an arithmetic number, because the mean of its divisors is an integer number (244537935).

Almost surely, 2^489075869 is an apocalyptic number.

It is an amenable number.

489075869 is a deficient number, since it is larger than the sum of its proper divisors (1).

489075869 is an equidigital number, since it uses as much as digits as its factorization.

489075869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The square root of 489075869 is about 22115.0597783501. The cubic root of 489075869 is about 787.8775850835.

The spelling of 489075869 in words is "four hundred eighty-nine million, seventy-five thousand, eight hundred sixty-nine".