489901 has 2 divisors, whose sum is σ = 489902. Its totient is φ = 489900.

The previous prime is 489887. The next prime is 489911. The reversal of 489901 is 109984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265225 + 224676 = 515^2 + 474^2 .

It is a cyclic number.

It is not a de Polignac number, because 489901 - 2⁵ = 489869 is a prime.

489901 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244950 + 244951.

It is an arithmetic number, because the mean of its divisors is an integer number (244951).

2⁴⁸⁹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

489901 is a deficient number, since it is larger than the sum of its proper divisors (1).

489901 is an equidigital number, since it uses as much as digits as its factorization.

489901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 489901 is about 699.9292821421. The cubic root of 489901 is about 78.8320418191.

The spelling of 489901 in words is "four hundred eighty-nine thousand, nine hundred one".