489381099 has 4 divisors (see below), whose sum is σ = 652508136. Its totient is φ = 326254064.

The previous prime is 489381073. The next prime is 489381121. The reversal of 489381099 is 990183984.

It is a happy number.

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 489381099 - 2⁷ = 489380971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489381019) 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, 81563514 + ... + 81563519.

It is an arithmetic number, because the mean of its divisors is an integer number (163127034).

Almost surely, 2^489381099 is an apocalyptic number.

489381099 is a deficient number, since it is larger than the sum of its proper divisors (163127037).

489381099 is a wasteful number, since it uses less digits than its factorization.

489381099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163127036.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 489381099 is about 22121.9596555097. The cubic root of 489381099 is about 788.0414545903.

The spelling of 489381099 in words is "four hundred eighty-nine million, three hundred eighty-one thousand, ninety-nine".