489349861 has 16 divisors (see below), whose sum is σ = 657030528. Its totient is φ = 351979200.

The previous prime is 489349859. The next prime is 489349867. The reversal of 489349861 is 168943984.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 489349861 - 2¹ = 489349859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 489349799 and 489349808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489349867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243430 + ... + 245431.

It is an arithmetic number, because the mean of its divisors is an integer number (41064408).

Almost surely, 2^489349861 is an apocalyptic number.

It is an amenable number.

489349861 is a deficient number, since it is larger than the sum of its proper divisors (167680667).

489349861 is a wasteful number, since it uses less digits than its factorization.

489349861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488892.

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

The square root of 489349861 is about 22121.2536037179. The cubic root of 489349861 is about 788.0246869064.

The spelling of 489349861 in words is "four hundred eighty-nine million, three hundred forty-nine thousand, eight hundred sixty-one".