3944486309 has 2 divisors, whose sum is σ = 3944486310. Its totient is φ = 3944486308.

The previous prime is 3944486239. The next prime is 3944486341. The reversal of 3944486309 is 9036844493.

3944486309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3530974084 + 413512225 = 59422^2 + 20335^2 .

It is a cyclic number.

It is not a de Polignac number, because 3944486309 - 2¹⁶ = 3944420773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3944486209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972243154 + 1972243155.

It is an arithmetic number, because the mean of its divisors is an integer number (1972243155).

Almost surely, 2^3944486309 is an apocalyptic number.

It is an amenable number.

3944486309 is a deficient number, since it is larger than the sum of its proper divisors (1).

3944486309 is an equidigital number, since it uses as much as digits as its factorization.

3944486309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The square root of 3944486309 is about 62805.1455614904. The cubic root of 3944486309 is about 1580.0232743727.

The spelling of 3944486309 in words is "three billion, nine hundred forty-four million, four hundred eighty-six thousand, three hundred nine".