489612779 has 8 divisors (see below), whose sum is σ = 499884672. Its totient is φ = 479413440.

The previous prime is 489612769. The next prime is 489612797. The reversal of 489612779 is 977216984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 489612779 - 2¹⁶ = 489547243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 489612779.

It is not an unprimeable number, because it can be changed into a prime (489612709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4394 + ... + 31599.

It is an arithmetic number, because the mean of its divisors is an integer number (62485584).

Almost surely, 2^489612779 is an apocalyptic number.

489612779 is a deficient number, since it is larger than the sum of its proper divisors (10271893).

489612779 is a wasteful number, since it uses less digits than its factorization.

489612779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36277.

The product of its digits is 1524096, while the sum is 53.

The square root of 489612779 is about 22127.1954616937. The cubic root of 489612779 is about 788.1657916637.

The spelling of 489612779 in words is "four hundred eighty-nine million, six hundred twelve thousand, seven hundred seventy-nine".