3968799726 has 8 divisors (see below), whose sum is σ = 7937599464. Its totient is φ = 1322933240.

The previous prime is 3968799721. The next prime is 3968799733. The reversal of 3968799726 is 6279978693.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

3968799726 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968799721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330733305 + ... + 330733316.

It is an arithmetic number, because the mean of its divisors is an integer number (992199933).

Almost surely, 2^3968799726 is an apocalyptic number.

3968799726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3968799726 is a wasteful number, since it uses less digits than its factorization.

3968799726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661466626.

The product of its digits is 61725888, while the sum is 66.

The square root of 3968799726 is about 62998.4105037579. The cubic root of 3968799726 is about 1583.2629952231.

The spelling of 3968799726 in words is "three billion, nine hundred sixty-eight million, seven hundred ninety-nine thousand, seven hundred twenty-six".