489297779 has 4 divisors (see below), whose sum is σ = 494342184. Its totient is φ = 484253376.

The previous prime is 489297763. The next prime is 489297793. The reversal of 489297779 is 977792984.

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

It is a cyclic number.

It is not a de Polignac number, because 489297779 - 2⁴ = 489297763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489297719) 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, 2522057 + ... + 2522250.

It is an arithmetic number, because the mean of its divisors is an integer number (123585546).

Almost surely, 2^489297779 is an apocalyptic number.

489297779 is a deficient number, since it is larger than the sum of its proper divisors (5044405).

489297779 is an equidigital number, since it uses as much as digits as its factorization.

489297779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5044404.

The product of its digits is 16003008, while the sum is 62.

The square root of 489297779 is about 22120.0763787108. The cubic root of 489297779 is about 787.9967291601.

The spelling of 489297779 in words is "four hundred eighty-nine million, two hundred ninety-seven thousand, seven hundred seventy-nine".