489289277 has 2 divisors, whose sum is σ = 489289278. Its totient is φ = 489289276.

The previous prime is 489289271. The next prime is 489289309. The reversal of 489289277 is 772982984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255168676 + 234120601 = 15974^2 + 15301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489289277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489289271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244644638 + 244644639.

It is an arithmetic number, because the mean of its divisors is an integer number (244644639).

Almost surely, 2^489289277 is an apocalyptic number.

It is an amenable number.

489289277 is a deficient number, since it is larger than the sum of its proper divisors (1).

489289277 is an equidigital number, since it uses as much as digits as its factorization.

489289277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The square root of 489289277 is about 22119.8841995161. The cubic root of 489289277 is about 787.9921650771.

The spelling of 489289277 in words is "four hundred eighty-nine million, two hundred eighty-nine thousand, two hundred seventy-seven".