489461839 has 8 divisors (see below), whose sum is σ = 491765760. Its totient is φ = 487164216.

The previous prime is 489461809. The next prime is 489461851. The reversal of 489461839 is 938164984.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 489461839 - 2⁷ = 489461711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489461809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220674 + ... + 222880.

It is an arithmetic number, because the mean of its divisors is an integer number (61470720).

Almost surely, 2^489461839 is an apocalyptic number.

489461839 is a deficient number, since it is larger than the sum of its proper divisors (2303921).

489461839 is a wasteful number, since it uses less digits than its factorization.

489461839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149.

The product of its digits is 1492992, while the sum is 52.

The square root of 489461839 is about 22123.7844637847. The cubic root of 489461839 is about 788.0847902568.

The spelling of 489461839 in words is "four hundred eighty-nine million, four hundred sixty-one thousand, eight hundred thirty-nine".