63919903 has 2 divisors, whose sum is σ = 63919904. Its totient is φ = 63919902.

The previous prime is 63919883. The next prime is 63919909. The reversal of 63919903 is 30991936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63919903 - 2⁹ = 63919391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63919909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31959951 + 31959952.

It is an arithmetic number, because the mean of its divisors is an integer number (31959952).

Almost surely, 2^63919903 is an apocalyptic number.

63919903 is a deficient number, since it is larger than the sum of its proper divisors (1).

63919903 is an equidigital number, since it uses as much as digits as its factorization.

63919903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39366, while the sum is 40.

The square root of 63919903 is about 7994.9923702278. The cubic root of 63919903 is about 399.8330615886.

The spelling of 63919903 in words is "sixty-three million, nine hundred nineteen thousand, nine hundred three".