3979663 has 2 divisors, whose sum is σ = 3979664. Its totient is φ = 3979662.

The previous prime is 3979643. The next prime is 3979669. The reversal of 3979663 is 3669793.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3979663 - 2¹⁷ = 3848591 is a prime.

3979663 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3979669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989831 + 1989832.

It is an arithmetic number, because the mean of its divisors is an integer number (1989832).

Almost surely, 2^3979663 is an apocalyptic number.

3979663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3979663 is an equidigital number, since it uses as much as digits as its factorization.

3979663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 43.

The square root of 3979663 is about 1994.9092711199. The cubic root of 3979663 is about 158.4706231816.

The spelling of 3979663 in words is "three million, nine hundred seventy-nine thousand, six hundred sixty-three".