8987544013 has 4 divisors (see below), whose sum is σ = 10271478880. Its totient is φ = 7703609148.

The previous prime is 8987543987. The next prime is 8987544053. The reversal of 8987544013 is 3104457898.

8987544013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3104457898 = 2 ⋅1552228949.

It is a cyclic number.

It is not a de Polignac number, because 8987544013 - 2⁹ = 8987543501 is a prime.

It is a super-2 number, since 2×8987544013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8987544053) 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 3 ways as a sum of consecutive naturals, for example, 641967423 + ... + 641967436.

It is an arithmetic number, because the mean of its divisors is an integer number (2567869720).

Almost surely, 2^8987544013 is an apocalyptic number.

It is an amenable number.

8987544013 is a deficient number, since it is larger than the sum of its proper divisors (1283934867).

8987544013 is a wasteful number, since it uses less digits than its factorization.

8987544013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283934866.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 8987544013 is about 94802.6582591438. The cubic root of 8987544013 is about 2079.1237690089.

The spelling of 8987544013 in words is "eight billion, nine hundred eighty-seven million, five hundred forty-four thousand, thirteen".