489378899 has 4 divisors (see below), whose sum is σ = 499791264. Its totient is φ = 478966536.

The previous prime is 489378893. The next prime is 489378913. The reversal of 489378899 is 998873984.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489378899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489378893) 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, 5206112 + ... + 5206205.

It is an arithmetic number, because the mean of its divisors is an integer number (124947816).

Almost surely, 2^489378899 is an apocalyptic number.

489378899 is a deficient number, since it is larger than the sum of its proper divisors (10412365).

489378899 is a wasteful number, since it uses less digits than its factorization.

489378899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10412364.

The product of its digits is 31352832, while the sum is 65.

The square root of 489378899 is about 22121.9099311068. The cubic root of 489378899 is about 788.0402737153.

The spelling of 489378899 in words is "four hundred eighty-nine million, three hundred seventy-eight thousand, eight hundred ninety-nine".