489399993 has 12 divisors (see below), whose sum is σ = 708644820. Its totient is φ = 325466496.

The previous prime is 489399991. The next prime is 489400019. The reversal of 489399993 is 399993984.

It can be written as a sum of positive squares in 2 ways, for example, as 392515344 + 96884649 = 19812^2 + 9843^2 .

It is not a de Polignac number, because 489399993 - 2¹ = 489399991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489399993.

It is not an unprimeable number, because it can be changed into a prime (489399991) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 62796 + ... + 70157.

It is an arithmetic number, because the mean of its divisors is an integer number (59053735).

Almost surely, 2^489399993 is an apocalyptic number.

It is an amenable number.

489399993 is a deficient number, since it is larger than the sum of its proper divisors (219244827).

489399993 is a wasteful number, since it uses less digits than its factorization.

489399993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133368 (or 133365 counting only the distinct ones).

The product of its digits is 17006112, while the sum is 63.

The square root of 489399993 is about 22122.3866931215. The cubic root of 489399993 is about 788.0515960143.

The spelling of 489399993 in words is "four hundred eighty-nine million, three hundred ninety-nine thousand, nine hundred ninety-three".