3977569 has 2 divisors, whose sum is σ = 3977570. Its totient is φ = 3977568.

The previous prime is 3977549. The next prime is 3977573. The reversal of 3977569 is 9657793.

3977569 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., 3017169 + 960400 = 1737^2 + 980^2 .

It is an emirp because it is prime and its reverse (9657793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3977569 - 2¹³ = 3969377 is a prime.

It is a super-2 number, since 2×3977569² = 31642110299522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3977509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1988784 + 1988785.

It is an arithmetic number, because the mean of its divisors is an integer number (1988785).

Almost surely, 2^3977569 is an apocalyptic number.

It is an amenable number.

3977569 is a deficient number, since it is larger than the sum of its proper divisors (1).

3977569 is an equidigital number, since it uses as much as digits as its factorization.

3977569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 357210, while the sum is 46.

The square root of 3977569 is about 1994.3843661642. The cubic root of 3977569 is about 158.4428238676.

The spelling of 3977569 in words is "three million, nine hundred seventy-seven thousand, five hundred sixty-nine".