3926396544 has 128 divisors (see below), whose sum is σ = 12173414400. Its totient is φ = 1097923584.

The previous prime is 3926396533. The next prime is 3926396561. The reversal of 3926396544 is 4456936293.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110797 + ... + 141875.

It is an arithmetic number, because the mean of its divisors is an integer number (95104800).

Almost surely, 2^3926396544 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 3926396544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6086707200).

3926396544 is an abundant number, since it is smaller than the sum of its proper divisors (8247017856).

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

3926396544 is a wasteful number, since it uses less digits than its factorization.

3926396544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31150 (or 31138 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 51.

The square root of 3926396544 is about 62660.9650739597. The cubic root of 3926396544 is about 1577.6041968106.

It can be divided in two parts, 392 and 6396544, that added together give a palindrome (6396936).

The spelling of 3926396544 in words is "three billion, nine hundred twenty-six million, three hundred ninety-six thousand, five hundred forty-four".