489655997 has 2 divisors, whose sum is σ = 489655998. Its totient is φ = 489655996.

The previous prime is 489655963. The next prime is 489656003. The reversal of 489655997 is 799556984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303770041 + 185885956 = 17429^2 + 13634^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489655997 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 (489655297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244827998 + 244827999.

It is an arithmetic number, because the mean of its divisors is an integer number (244827999).

Almost surely, 2^489655997 is an apocalyptic number.

It is an amenable number.

489655997 is a deficient number, since it is larger than the sum of its proper divisors (1).

489655997 is an equidigital number, since it uses as much as digits as its factorization.

489655997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24494400, while the sum is 62.

The square root of 489655997 is about 22128.1720212041. The cubic root of 489655997 is about 788.1889813818.

The spelling of 489655997 in words is "four hundred eighty-nine million, six hundred fifty-five thousand, nine hundred ninety-seven".