3909644677 has 2 divisors, whose sum is σ = 3909644678. Its totient is φ = 3909644676.

The previous prime is 3909644671. The next prime is 3909644689. The reversal of 3909644677 is 7764469093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3435014881 + 474629796 = 58609^2 + 21786^2 .

It is an emirp because it is prime and its reverse (7764469093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3909644677 - 2⁷ = 3909644549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3909644671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954822338 + 1954822339.

It is an arithmetic number, because the mean of its divisors is an integer number (1954822339).

Almost surely, 2^3909644677 is an apocalyptic number.

It is an amenable number.

3909644677 is a deficient number, since it is larger than the sum of its proper divisors (1).

3909644677 is an equidigital number, since it uses as much as digits as its factorization.

3909644677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 55.

The square root of 3909644677 is about 62527.1515183604. The cubic root of 3909644677 is about 1575.3573962772.

It can be divided in two parts, 390964 and 4677, that added together give a square (395641 = 629²).

The spelling of 3909644677 in words is "three billion, nine hundred nine million, six hundred forty-four thousand, six hundred seventy-seven".