489851 has 2 divisors, whose sum is σ = 489852. Its totient is φ = 489850.

The previous prime is 489847. The next prime is 489869. The reversal of 489851 is 158984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489851 - 2² = 489847 is a prime.

It is not a weakly prime, because it can be changed into another prime (489871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244925 + 244926.

It is an arithmetic number, because the mean of its divisors is an integer number (244926).

2⁴⁸⁹⁸⁵¹ is an apocalyptic number.

489851 is a deficient number, since it is larger than the sum of its proper divisors (1).

489851 is an equidigital number, since it uses as much as digits as its factorization.

489851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 35.

The square root of 489851 is about 699.8935633366. The cubic root of 489851 is about 78.8293598241.

The spelling of 489851 in words is "four hundred eighty-nine thousand, eight hundred fifty-one".