489964901 has 2 divisors, whose sum is σ = 489964902. Its totient is φ = 489964900.

The previous prime is 489964861. The next prime is 489964907. The reversal of 489964901 is 109469984.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282576100 + 207388801 = 16810^2 + 14401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489964901 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489964901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489964907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244982450 + 244982451.

It is an arithmetic number, because the mean of its divisors is an integer number (244982451).

Almost surely, 2^489964901 is an apocalyptic number.

It is an amenable number.

489964901 is a deficient number, since it is larger than the sum of its proper divisors (1).

489964901 is an equidigital number, since it uses as much as digits as its factorization.

489964901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 489964901 is about 22135.1508013838. The cubic root of 489964901 is about 788.3546919685.

The spelling of 489964901 in words is "four hundred eighty-nine million, nine hundred sixty-four thousand, nine hundred one".