63889393 has 2 divisors, whose sum is σ = 63889394. Its totient is φ = 63889392.

The previous prime is 63889367. The next prime is 63889453. The reversal of 63889393 is 39398836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52519009 + 11370384 = 7247^2 + 3372^2 .

It is a cyclic number.

It is not a de Polignac number, because 63889393 - 2⁵ = 63889361 is a prime.

It is not a weakly prime, because it can be changed into another prime (63889303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31944696 + 31944697.

It is an arithmetic number, because the mean of its divisors is an integer number (31944697).

Almost surely, 2^63889393 is an apocalyptic number.

It is an amenable number.

63889393 is a deficient number, since it is larger than the sum of its proper divisors (1).

63889393 is an equidigital number, since it uses as much as digits as its factorization.

63889393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 63889393 is about 7993.0840731222. The cubic root of 63889393 is about 399.7694358760.

The spelling of 63889393 in words is "sixty-three million, eight hundred eighty-nine thousand, three hundred ninety-three".