8239956664 has 8 divisors (see below), whose sum is σ = 15449918760. Its totient is φ = 4119978328.

The previous prime is 8239956649. The next prime is 8239956709. The reversal of 8239956664 is 4666599328.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 8239956599 and 8239956608.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 514997284 + ... + 514997299.

It is an arithmetic number, because the mean of its divisors is an integer number (1931239845).

Almost surely, 2^8239956664 is an apocalyptic number.

It is an amenable number.

8239956664 is a deficient number, since it is larger than the sum of its proper divisors (7209962096).

8239956664 is a wasteful number, since it uses less digits than its factorization.

8239956664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029994589 (or 1029994585 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 58.

The square root of 8239956664 is about 90774.2070414278. The cubic root of 8239956664 is about 2019.7997272282.

The spelling of 8239956664 in words is "eight billion, two hundred thirty-nine million, nine hundred fifty-six thousand, six hundred sixty-four".