4989448661 has 8 divisors (see below), whose sum is σ = 5074886784. Its totient is φ = 4904333280.

The previous prime is 4989448613. The next prime is 4989448663. The reversal of 4989448661 is 1668449894.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4989448661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4989448661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989448663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49400 + ... + 111441.

It is an arithmetic number, because the mean of its divisors is an integer number (634360848).

Almost surely, 2^4989448661 is an apocalyptic number.

It is an amenable number.

4989448661 is a deficient number, since it is larger than the sum of its proper divisors (85438123).

4989448661 is a wasteful number, since it uses less digits than its factorization.

4989448661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161371.

The product of its digits is 11943936, while the sum is 59.

The square root of 4989448661 is about 70636.0294821276. The cubic root of 4989448661 is about 1708.7722638552.

The spelling of 4989448661 in words is "four billion, nine hundred eighty-nine million, four hundred forty-eight thousand, six hundred sixty-one".