489816905 has 8 divisors (see below), whose sum is σ = 588715584. Its totient is φ = 391230000.

The previous prime is 489816881. The next prime is 489816949. The reversal of 489816905 is 509618984.

It is a happy number.

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

It is not a de Polignac number, because 489816905 - 2¹² = 489812809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74471 + ... + 80780.

It is an arithmetic number, because the mean of its divisors is an integer number (73589448).

Almost surely, 2^489816905 is an apocalyptic number.

It is an amenable number.

489816905 is a deficient number, since it is larger than the sum of its proper divisors (98898679).

489816905 is a wasteful number, since it uses less digits than its factorization.

489816905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155887.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 489816905 is about 22131.8075402801. The cubic root of 489816905 is about 788.2753086699.

The spelling of 489816905 in words is "four hundred eighty-nine million, eight hundred sixteen thousand, nine hundred five".