489491 has 4 divisors (see below), whose sum is σ = 506400. Its totient is φ = 472584.

The previous prime is 489487. The next prime is 489493. The reversal of 489491 is 194984.

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

It is not a de Polignac number, because 489491 - 2² = 489487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489493) 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, 8411 + ... + 8468.

It is an arithmetic number, because the mean of its divisors is an integer number (126600).

2⁴⁸⁹⁴⁹¹ is an apocalyptic number.

489491 is a deficient number, since it is larger than the sum of its proper divisors (16909).

489491 is a wasteful number, since it uses less digits than its factorization.

489491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16908.

The product of its digits is 10368, while the sum is 35.

The square root of 489491 is about 699.6363341051. The cubic root of 489491 is about 78.8100440700.

The spelling of 489491 in words is "four hundred eighty-nine thousand, four hundred ninety-one".