489910261 has 8 divisors (see below), whose sum is σ = 492791040. Its totient is φ = 487036032.

The previous prime is 489910259. The next prime is 489910279. The reversal of 489910261 is 162019984.

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 489910261 - 2¹ = 489910259 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 (489910241) 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, 258405 + ... + 260293.

It is an arithmetic number, because the mean of its divisors is an integer number (61598880).

Almost surely, 2^489910261 is an apocalyptic number.

It is an amenable number.

489910261 is a deficient number, since it is larger than the sum of its proper divisors (2880779).

489910261 is a wasteful number, since it uses less digits than its factorization.

489910261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 489910261 is about 22133.9165309712. The cubic root of 489910261 is about 788.3253855824.

The spelling of 489910261 in words is "four hundred eighty-nine million, nine hundred ten thousand, two hundred sixty-one".