489297778 has 8 divisors (see below), whose sum is σ = 744284160. Its totient is φ = 241203060.

The previous prime is 489297763. The next prime is 489297793. The reversal of 489297778 is 877792984.

It is an interprime number because it is at equal distance from previous prime (489297763) and next prime (489297793).

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

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, 1722738 + ... + 1723021.

It is an arithmetic number, because the mean of its divisors is an integer number (93035520).

Almost surely, 2^489297778 is an apocalyptic number.

489297778 is a deficient number, since it is larger than the sum of its proper divisors (254986382).

489297778 is a wasteful number, since it uses less digits than its factorization.

489297778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445832.

The product of its digits is 14224896, while the sum is 61.

The square root of 489297778 is about 22120.0763561069. The cubic root of 489297778 is about 787.9967286232.

The spelling of 489297778 in words is "four hundred eighty-nine million, two hundred ninety-seven thousand, seven hundred seventy-eight".