489400 has 24 divisors (see below), whose sum is σ = 1138320. Its totient is φ = 195680.

The previous prime is 489389. The next prime is 489407. The reversal of 489400 is 4984.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489407) by changing a digit.

489400 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 1024 + ... + 1423.

It is an arithmetic number, because the mean of its divisors is an integer number (47430).

2⁴⁸⁹⁴⁰⁰ is an apocalyptic number.

489400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

489400 is an abundant number, since it is smaller than the sum of its proper divisors (648920).

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

489400 is a wasteful number, since it uses less digits than its factorization.

489400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463 (or 2454 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 489400 is about 699.5712972957. The cubic root of 489400 is about 78.8051599772.

Subtracting from 489400 its reverse (4984), we obtain a square (484416 = 696²).

The spelling of 489400 in words is "four hundred eighty-nine thousand, four hundred".