489493221 has 32 divisors (see below), whose sum is σ = 757693440. Its totient is φ = 275321856.

The previous prime is 489493211. The next prime is 489493231. The reversal of 489493221 is 122394984.

It is an interprime number because it is at equal distance from previous prime (489493211) and next prime (489493231).

It is not a de Polignac number, because 489493221 - 2⁹ = 489492709 is a prime.

It is a super-2 number, since 2×489493221² = 479207226809909682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489493211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401605 + ... + 402821.

It is an arithmetic number, because the mean of its divisors is an integer number (23677920).

Almost surely, 2^489493221 is an apocalyptic number.

It is an amenable number.

489493221 is a deficient number, since it is larger than the sum of its proper divisors (268200219).

489493221 is a wasteful number, since it uses less digits than its factorization.

489493221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its digits is 124416, while the sum is 42.

The square root of 489493221 is about 22124.4936891220. The cubic root of 489493221 is about 788.1016326651.

The spelling of 489493221 in words is "four hundred eighty-nine million, four hundred ninety-three thousand, two hundred twenty-one".