63393994 has 16 divisors (see below), whose sum is σ = 100558080. Its totient is φ = 29890080.

The previous prime is 63393991. The next prime is 63394007. The reversal of 63393994 is 49939336.

63393994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (63393991) 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 in 7 ways as a sum of consecutive naturals, for example, 4734 + ... + 12214.

It is an arithmetic number, because the mean of its divisors is an integer number (6284880).

Almost surely, 2^63393994 is an apocalyptic number.

63393994 is a deficient number, since it is larger than the sum of its proper divisors (37164086).

63393994 is a wasteful number, since it uses less digits than its factorization.

63393994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7725.

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

The square root of 63393994 is about 7962.0345389856. The cubic root of 63393994 is about 398.7334815601.

The spelling of 63393994 in words is "sixty-three million, three hundred ninety-three thousand, nine hundred ninety-four".