3976995689 has 8 divisors (see below), whose sum is σ = 4036399560. Its totient is φ = 3917725056.

The previous prime is 3976995679. The next prime is 3976995703. The reversal of 3976995689 is 9865996793.

It can be written as a sum of positive squares in 4 ways, for example, as 508728025 + 3468267664 = 22555^2 + 58892^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3976995689 - 2⁸ = 3976995433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3976995629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27659 + ... + 93375.

It is an arithmetic number, because the mean of its divisors is an integer number (504549945).

Almost surely, 2^3976995689 is an apocalyptic number.

It is an amenable number.

3976995689 is a deficient number, since it is larger than the sum of its proper divisors (59403871).

3976995689 is an equidigital number, since it uses as much as digits as its factorization.

3976995689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66619.

The product of its digits is 198404640, while the sum is 71.

The square root of 3976995689 is about 63063.4259218447. The cubic root of 3976995689 is about 1584.3521106204.

The spelling of 3976995689 in words is "three billion, nine hundred seventy-six million, nine hundred ninety-five thousand, six hundred eighty-nine".