3944817365 has 16 divisors (see below), whose sum is σ = 4941961200. Its totient is φ = 3019064832.

The previous prime is 3944817361. The next prime is 3944817379. The reversal of 3944817365 is 5637184493.

It can be written as a sum of positive squares in 8 ways, for example, as 186759556 + 3758057809 = 13666^2 + 61303^2 .

It is a cyclic number.

It is not a de Polignac number, because 3944817365 - 2² = 3944817361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944817361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108992 + ... + 140601.

It is an arithmetic number, because the mean of its divisors is an integer number (308872575).

Almost surely, 2^3944817365 is an apocalyptic number.

It is an amenable number.

3944817365 is a deficient number, since it is larger than the sum of its proper divisors (997143835).

3944817365 is a wasteful number, since it uses less digits than its factorization.

3944817365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249736.

The product of its digits is 2177280, while the sum is 50.

The square root of 3944817365 is about 62807.7810864227. The cubic root of 3944817365 is about 1580.0674762883.

The spelling of 3944817365 in words is "three billion, nine hundred forty-four million, eight hundred seventeen thousand, three hundred sixty-five".