3977663 has 2 divisors, whose sum is σ = 3977664. Its totient is φ = 3977662.

The previous prime is 3977653. The next prime is 3977681. The reversal of 3977663 is 3667793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3977663 - 2⁴ = 3977647 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3977663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3977653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1988831 + 1988832.

It is an arithmetic number, because the mean of its divisors is an integer number (1988832).

Almost surely, 2^3977663 is an apocalyptic number.

3977663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3977663 is an equidigital number, since it uses as much as digits as its factorization.

3977663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 41.

The square root of 3977663 is about 1994.4079321944. The cubic root of 3977663 is about 158.4440719925. Note that the first 3 decimals are identical.

The spelling of 3977663 in words is "three million, nine hundred seventy-seven thousand, six hundred sixty-three".