489451 has 4 divisors (see below), whose sum is σ = 495432. Its totient is φ = 483472.

The previous prime is 489449. The next prime is 489457. The reversal of 489451 is 154984.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 489451 - 2¹ = 489449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2866 + ... + 3031.

It is an arithmetic number, because the mean of its divisors is an integer number (123858).

2⁴⁸⁹⁴⁵¹ is an apocalyptic number.

489451 is a deficient number, since it is larger than the sum of its proper divisors (5981).

489451 is an equidigital number, since it uses as much as digits as its factorization.

489451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980.

The product of its digits is 5760, while the sum is 31.

The square root of 489451 is about 699.6077472413. The cubic root of 489451 is about 78.8078972906.

The spelling of 489451 in words is "four hundred eighty-nine thousand, four hundred fifty-one".