489671965 has 4 divisors (see below), whose sum is σ = 587606364. Its totient is φ = 391737568.

The previous prime is 489671951. The next prime is 489671977. The reversal of 489671965 is 569176984.

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

It can be written as a sum of positive squares in 2 ways, for example, as 267453316 + 222218649 = 16354^2 + 14907^2 .

It is a cyclic number.

It is not a de Polignac number, because 489671965 - 2⁹ = 489671453 is a prime.

It is a super-2 number, since 2×489671965² = 479557266613922450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48967192 + ... + 48967201.

It is an arithmetic number, because the mean of its divisors is an integer number (146901591).

Almost surely, 2^489671965 is an apocalyptic number.

It is an amenable number.

489671965 is a deficient number, since it is larger than the sum of its proper divisors (97934399).

489671965 is an equidigital number, since it uses as much as digits as its factorization.

489671965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97934398.

The product of its digits is 3265920, while the sum is 55.

The square root of 489671965 is about 22128.5328252914. The cubic root of 489671965 is about 788.1975490735.

The spelling of 489671965 in words is "four hundred eighty-nine million, six hundred seventy-one thousand, nine hundred sixty-five".