3944277217 has 2 divisors, whose sum is σ = 3944277218. Its totient is φ = 3944277216.

The previous prime is 3944277209. The next prime is 3944277251. The reversal of 3944277217 is 7127724493.

3944277217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3674299456 + 269977761 = 60616^2 + 16431^2 .

It is an emirp because it is prime and its reverse (7127724493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3944277217 - 2³ = 3944277209 is a prime.

It is a super-3 number, since 3×3944277217³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (3944277257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972138608 + 1972138609.

It is an arithmetic number, because the mean of its divisors is an integer number (1972138609).

Almost surely, 2^3944277217 is an apocalyptic number.

It is an amenable number.

3944277217 is a deficient number, since it is larger than the sum of its proper divisors (1).

3944277217 is an equidigital number, since it uses as much as digits as its factorization.

3944277217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 46.

The square root of 3944277217 is about 62803.4809305981. The cubic root of 3944277217 is about 1579.9953555650.

The spelling of 3944277217 in words is "three billion, nine hundred forty-four million, two hundred seventy-seven thousand, two hundred seventeen".