8639605344 has 48 divisors (see below), whose sum is σ = 22689640512. Its totient is φ = 2878512768.

The previous prime is 8639605319. The next prime is 8639605361. The reversal of 8639605344 is 4435069368.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 8639605293 and 8639605302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195267 + ... + 235389.

It is an arithmetic number, because the mean of its divisors is an integer number (472700844).

Almost surely, 2^8639605344 is an apocalyptic number.

It is an amenable number.

8639605344 is an abundant number, since it is smaller than the sum of its proper divisors (14050035168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8639605344 is a wasteful number, since it uses less digits than its factorization.

8639605344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42379 (or 42371 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The square root of 8639605344 is about 92949.4773734635. The cubic root of 8639605344 is about 2051.9398923758.

The spelling of 8639605344 in words is "eight billion, six hundred thirty-nine million, six hundred five thousand, three hundred forty-four".