489609878 has 8 divisors (see below), whose sum is σ = 766345968. Its totient is φ = 234161224.

The previous prime is 489609853. The next prime is 489609881. The reversal of 489609878 is 878906984.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5321801 + ... + 5321892.

It is an arithmetic number, because the mean of its divisors is an integer number (95793246).

Almost surely, 2^489609878 is an apocalyptic number.

489609878 is a deficient number, since it is larger than the sum of its proper divisors (276736090).

489609878 is a wasteful number, since it uses less digits than its factorization.

489609878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10643718.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 489609878 is about 22127.1299087794. The cubic root of 489609878 is about 788.1642350094.

The spelling of 489609878 in words is "four hundred eighty-nine million, six hundred nine thousand, eight hundred seventy-eight".