489838239 has 16 divisors (see below), whose sum is σ = 791658240. Its totient is φ = 296871480.

The previous prime is 489838231. The next prime is 489838247. The reversal of 489838239 is 932838984.

It is a happy number.

489838239 is a `hidden beast` number, since 489 + 83 + 82 + 3 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (489838231) and next prime (489838247).

It is not a de Polignac number, because 489838239 - 2³ = 489838231 is a prime.

It is a super-2 number, since 2×489838239² = 479883000773242242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489838231) 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 15 ways as a sum of consecutive naturals, for example, 824347 + ... + 824940.

It is an arithmetic number, because the mean of its divisors is an integer number (49478640).

Almost surely, 2^489838239 is an apocalyptic number.

489838239 is a deficient number, since it is larger than the sum of its proper divisors (301820001).

489838239 is a wasteful number, since it uses less digits than its factorization.

489838239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649307 (or 1649301 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 489838239 is about 22132.2895110289. The cubic root of 489838239 is about 788.2867529606.

The spelling of 489838239 in words is "four hundred eighty-nine million, eight hundred thirty-eight thousand, two hundred thirty-nine".