489754661 has 4 divisors (see below), whose sum is σ = 534277824. Its totient is φ = 445231500.

The previous prime is 489754651. The next prime is 489754667. The reversal of 489754661 is 166457984.

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 489754661 - 2¹⁰ = 489753637 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 (489754667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22261565 + ... + 22261586.

It is an arithmetic number, because the mean of its divisors is an integer number (133569456).

Almost surely, 2^489754661 is an apocalyptic number.

It is an amenable number.

489754661 is a deficient number, since it is larger than the sum of its proper divisors (44523163).

489754661 is a wasteful number, since it uses less digits than its factorization.

489754661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44523162.

The product of its digits is 1451520, while the sum is 50.

The square root of 489754661 is about 22130.4012842063. The cubic root of 489754661 is about 788.2419169499.

The spelling of 489754661 in words is "four hundred eighty-nine million, seven hundred fifty-four thousand, six hundred sixty-one".