2489664447 has 12 divisors (see below), whose sum is σ = 3596912800. Its totient is φ = 1659439008.

The previous prime is 2489664409. The next prime is 2489664451. The reversal of 2489664447 is 7444669842.

It is not a de Polignac number, because 2489664447 - 2¹² = 2489660351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2489664393 and 2489664402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489664407) 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 11 ways as a sum of consecutive naturals, for example, 23658 + ... + 74424.

Almost surely, 2^2489664447 is an apocalyptic number.

2489664447 is a deficient number, since it is larger than the sum of its proper divisors (1107248353).

2489664447 is a wasteful number, since it uses less digits than its factorization.

2489664447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56222 (or 56219 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The square root of 2489664447 is about 49896.5374249557. The cubic root of 2489664447 is about 1355.3358910940.

The spelling of 2489664447 in words is "two billion, four hundred eighty-nine million, six hundred sixty-four thousand, four hundred forty-seven".