3979727369 has 2 divisors, whose sum is σ = 3979727370. Its totient is φ = 3979727368.

The previous prime is 3979727359. The next prime is 3979727399. The reversal of 3979727369 is 9637279793.

3979727369 is digitally balanced in base 2 and base 3, because in such bases 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., 3604801600 + 374925769 = 60040^2 + 19363^2 .

It is an emirp because it is prime and its reverse (9637279793) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3979727369 is a prime.

It is a super-2 number, since 2×3979727369² = 31676459863135324322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3979727359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989863684 + 1989863685.

It is an arithmetic number, because the mean of its divisors is an integer number (1989863685).

Almost surely, 2^3979727369 is an apocalyptic number.

It is an amenable number.

3979727369 is a deficient number, since it is larger than the sum of its proper divisors (1).

3979727369 is an equidigital number, since it uses as much as digits as its factorization.

3979727369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27005076, while the sum is 62.

The square root of 3979727369 is about 63085.0803994098. The cubic root of 3979727369 is about 1584.7147757055.

The spelling of 3979727369 in words is "three billion, nine hundred seventy-nine million, seven hundred twenty-seven thousand, three hundred sixty-nine".