63399943 has 2 divisors, whose sum is σ = 63399944. Its totient is φ = 63399942.

The previous prime is 63399911. The next prime is 63399971. The reversal of 63399943 is 34999336.

63399943 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 is a cyclic number.

It is not a de Polignac number, because 63399943 - 2⁵ = 63399911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63399893 and 63399902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63399643) 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, 31699971 + 31699972.

It is an arithmetic number, because the mean of its divisors is an integer number (31699972).

Almost surely, 2^63399943 is an apocalyptic number.

63399943 is a deficient number, since it is larger than the sum of its proper divisors (1).

63399943 is an equidigital number, since it uses as much as digits as its factorization.

63399943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 46.

The square root of 63399943 is about 7962.4081156394. The cubic root of 63399943 is about 398.7459537788.

It can be divided in two parts, 633 and 99943, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 63399943 in words is "sixty-three million, three hundred ninety-nine thousand, nine hundred forty-three".