489878 has 4 divisors (see below), whose sum is σ = 734820. Its totient is φ = 244938.

The previous prime is 489871. The next prime is 489887. The reversal of 489878 is 878984.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122468 + ... + 122471.

It is an arithmetic number, because the mean of its divisors is an integer number (183705).

2⁴⁸⁹⁸⁷⁸ is an apocalyptic number.

489878 is a deficient number, since it is larger than the sum of its proper divisors (244942).

489878 is a wasteful number, since it uses less digits than its factorization.

489878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244941.

The product of its digits is 129024, while the sum is 44.

The square root of 489878 is about 699.9128517180. The cubic root of 489878 is about 78.8308081241.

The spelling of 489878 in words is "four hundred eighty-nine thousand, eight hundred seventy-eight".