489439 has 2 divisors, whose sum is σ = 489440. Its totient is φ = 489438.

The previous prime is 489431. The next prime is 489449. The reversal of 489439 is 934984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489439 - 2³ = 489431 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 489398 and 489407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244719 + 244720.

It is an arithmetic number, because the mean of its divisors is an integer number (244720).

2⁴⁸⁹⁴³⁹ is an apocalyptic number.

489439 is a deficient number, since it is larger than the sum of its proper divisors (1).

489439 is an equidigital number, since it uses as much as digits as its factorization.

489439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 489439 is about 699.5991709543. The cubic root of 489439 is about 78.8072532339.

The spelling of 489439 in words is "four hundred eighty-nine thousand, four hundred thirty-nine".