489942 has 32 divisors (see below), whose sum is σ = 1119360. Its totient is φ = 158760.

The previous prime is 489941. The next prime is 489943. The reversal of 489942 is 249984.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (489941) and next prime (489943).

It is a junction number, because it is equal to n+sod(n) for n = 489897 and 489906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489941) 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 in 15 ways as a sum of consecutive naturals, for example, 2217 + ... + 2427.

It is an arithmetic number, because the mean of its divisors is an integer number (34980).

2⁴⁸⁹⁹⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (559680).

489942 is an abundant number, since it is smaller than the sum of its proper divisors (629418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489942 is a wasteful number, since it uses less digits than its factorization.

489942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 259 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 489942 is about 699.9585702026. The cubic root of 489942 is about 78.8342409189.

It can be divided in two parts, 489 and 942, that added together give a triangular number (1431 = T₅₃).

The spelling of 489942 in words is "four hundred eighty-nine thousand, nine hundred forty-two".