489998621 has 8 divisors (see below), whose sum is σ = 570564864. Its totient is φ = 412074000.

The previous prime is 489998611. The next prime is 489998627. The reversal of 489998621 is 126899984.

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 489998621 - 2¹⁰ = 489997597 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 (489998627) 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, 660005 + ... + 660746.

It is an arithmetic number, because the mean of its divisors is an integer number (71320608).

Almost surely, 2^489998621 is an apocalyptic number.

It is an amenable number.

489998621 is a deficient number, since it is larger than the sum of its proper divisors (80566243).

489998621 is a wasteful number, since it uses less digits than its factorization.

489998621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320811.

The product of its digits is 2239488, while the sum is 56.

The square root of 489998621 is about 22135.9124727218. The cubic root of 489998621 is about 788.3727767404.

The spelling of 489998621 in words is "four hundred eighty-nine million, nine hundred ninety-eight thousand, six hundred twenty-one".