489948938721 has 48 divisors (see below), whose sum is σ = 773450233920. Its totient is φ = 296397279360.

The previous prime is 489948938707. The next prime is 489948938723. The reversal of 489948938721 is 127839849984.

489948938721 is a `hidden beast` number, since 4 + 8 + 99 + 489 + 38 + 7 + 21 = 666.

It is not a de Polignac number, because 489948938721 - 2⁶ = 489948938657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489948938721.

It is not an unprimeable number, because it can be changed into a prime (489948938723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 201044715 + ... + 201047151.

It is an arithmetic number, because the mean of its divisors is an integer number (16113546540).

Almost surely, 2^489948938721 is an apocalyptic number.

It is an amenable number.

489948938721 is a deficient number, since it is larger than the sum of its proper divisors (283501295199).

489948938721 is a wasteful number, since it uses less digits than its factorization.

489948938721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326 (or 5323 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 72.

The spelling of 489948938721 in words is "four hundred eighty-nine billion, nine hundred forty-eight million, nine hundred thirty-eight thousand, seven hundred twenty-one".