489784101 has 4 divisors (see below), whose sum is σ = 653045472. Its totient is φ = 326522732.

The previous prime is 489784091. The next prime is 489784123. The reversal of 489784101 is 101487984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 489784101 - 2⁵ = 489784069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489784151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81630681 + ... + 81630686.

It is an arithmetic number, because the mean of its divisors is an integer number (163261368).

Almost surely, 2^489784101 is an apocalyptic number.

It is an amenable number.

489784101 is a deficient number, since it is larger than the sum of its proper divisors (163261371).

489784101 is a wasteful number, since it uses less digits than its factorization.

489784101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163261370.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 489784101 is about 22131.0664225654. The cubic root of 489784101 is about 788.2577108285.

The spelling of 489784101 in words is "four hundred eighty-nine million, seven hundred eighty-four thousand, one hundred one".