489640273 has 12 divisors (see below), whose sum is σ = 527284780. Its totient is φ = 454505472.

The previous prime is 489640247. The next prime is 489640289. The reversal of 489640273 is 372046984.

It can be written as a sum of positive squares in 6 ways, for example, as 95101504 + 394538769 = 9752^2 + 19863^2 .

It is not a de Polignac number, because 489640273 - 2²⁵ = 456085841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489640213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9493 + ... + 32701.

Almost surely, 2^489640273 is an apocalyptic number.

It is an amenable number.

489640273 is a deficient number, since it is larger than the sum of its proper divisors (37644507).

489640273 is a wasteful number, since it uses less digits than its factorization.

489640273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23316 (or 23299 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 489640273 is about 22127.8167246568. The cubic root of 489640273 is about 788.1805444272.

The spelling of 489640273 in words is "four hundred eighty-nine million, six hundred forty thousand, two hundred seventy-three".