489297777 has 16 divisors (see below), whose sum is σ = 667699200. Its totient is φ = 318577232.

The previous prime is 489297763. The next prime is 489297793. The reversal of 489297777 is 777792984.

It is a cyclic number.

It is not a de Polignac number, because 489297777 - 2⁴ = 489297761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489297777.

It is not an unprimeable number, because it can be changed into a prime (489297577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67474 + ... + 74372.

It is an arithmetic number, because the mean of its divisors is an integer number (41731200).

Almost surely, 2^489297777 is an apocalyptic number.

489297777 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

489297777 is a deficient number, since it is larger than the sum of its proper divisors (178401423).

489297777 is a wasteful number, since it uses less digits than its factorization.

489297777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7452.

The product of its digits is 12446784, while the sum is 60.

The square root of 489297777 is about 22120.0763335030. The cubic root of 489297777 is about 787.9967280864.

The spelling of 489297777 in words is "four hundred eighty-nine million, two hundred ninety-seven thousand, seven hundred seventy-seven".