3964321808 has 40 divisors (see below), whose sum is σ = 7967049600. Its totient is φ = 1908676224.

The previous prime is 3964321789. The next prime is 3964321841. The reversal of 3964321808 is 8081234693.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164585 + ... + 187127.

It is an arithmetic number, because the mean of its divisors is an integer number (199176240).

Almost surely, 2^3964321808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3964321808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3983524800).

3964321808 is an abundant number, since it is smaller than the sum of its proper divisors (4002727792).

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

3964321808 is a wasteful number, since it uses less digits than its factorization.

3964321808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22959 (or 22953 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 3964321808 is about 62962.8605449276. The cubic root of 3964321808 is about 1582.6673163929.

The spelling of 3964321808 in words is "three billion, nine hundred sixty-four million, three hundred twenty-one thousand, eight hundred eight".