3964438520 has 32 divisors (see below), whose sum is σ = 10194271200. Its totient is φ = 1359235968.

The previous prime is 3964438501. The next prime is 3964438529. The reversal of 3964438520 is 258344693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964438529) 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 7 ways as a sum of consecutive naturals, for example, 7079075 + ... + 7079634.

It is an arithmetic number, because the mean of its divisors is an integer number (318570975).

Almost surely, 2^3964438520 is an apocalyptic number.

It is an amenable number.

3964438520 is an abundant number, since it is smaller than the sum of its proper divisors (6229832680).

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

3964438520 is a wasteful number, since it uses less digits than its factorization.

3964438520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14158727 (or 14158723 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The square root of 3964438520 is about 62963.7873702019. The cubic root of 3964438520 is about 1582.6828477972.

The spelling of 3964438520 in words is "three billion, nine hundred sixty-four million, four hundred thirty-eight thousand, five hundred twenty".