489679 has 2 divisors, whose sum is σ = 489680. Its totient is φ = 489678.

The previous prime is 489677. The next prime is 489689. The reversal of 489679 is 976984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489679 - 2¹ = 489677 is a prime.

Together with 489677, it forms a pair of twin primes.

489679 is a lucky number.

It is a plaindrome in base 16.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489673) 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, 244839 + 244840.

It is an arithmetic number, because the mean of its divisors is an integer number (244840).

2⁴⁸⁹⁶⁷⁹ is an apocalyptic number.

489679 is a deficient number, since it is larger than the sum of its proper divisors (1).

489679 is an equidigital number, since it uses as much as digits as its factorization.

489679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 489679 is about 699.7706767220. The cubic root of 489679 is about 78.8201323671.

The spelling of 489679 in words is "four hundred eighty-nine thousand, six hundred seventy-nine".