63979963 has 2 divisors, whose sum is σ = 63979964. Its totient is φ = 63979962.

The previous prime is 63979931. The next prime is 63980023. The reversal of 63979963 is 36997936.

63979963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63979963 - 2⁵ = 63979931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63979963.

It is not a weakly prime, because it can be changed into another prime (63979913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31989981 + 31989982.

It is an arithmetic number, because the mean of its divisors is an integer number (31989982).

Almost surely, 2^63979963 is an apocalyptic number.

63979963 is a deficient number, since it is larger than the sum of its proper divisors (1).

63979963 is an equidigital number, since it uses as much as digits as its factorization.

63979963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1653372, while the sum is 52.

The square root of 63979963 is about 7998.7475894667. The cubic root of 63979963 is about 399.9582518929.

The spelling of 63979963 in words is "sixty-three million, nine hundred seventy-nine thousand, nine hundred sixty-three".