489296257 has 2 divisors, whose sum is σ = 489296258. Its totient is φ = 489296256.

The previous prime is 489296239. The next prime is 489296267. The reversal of 489296257 is 752692984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415181376 + 74114881 = 20376^2 + 8609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489296257 is a prime.

It is a super-2 number, since 2×489296257² = 478821654228420098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (489296267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244648128 + 244648129.

It is an arithmetic number, because the mean of its divisors is an integer number (244648129).

Almost surely, 2^489296257 is an apocalyptic number.

It is an amenable number.

489296257 is a deficient number, since it is larger than the sum of its proper divisors (1).

489296257 is an equidigital number, since it uses as much as digits as its factorization.

489296257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The square root of 489296257 is about 22120.0419755479. The cubic root of 489296257 is about 787.9959121169.

The spelling of 489296257 in words is "four hundred eighty-nine million, two hundred ninety-six thousand, two hundred fifty-seven".