63969189 has 8 divisors (see below), whose sum is σ = 87597600. Its totient is φ = 41493456.

The previous prime is 63969173. The next prime is 63969197. The reversal of 63969189 is 98196936.

63969189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63969189 - 2⁴ = 63969173 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63969109) 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, 288039 + ... + 288260.

It is an arithmetic number, because the mean of its divisors is an integer number (10949700).

Almost surely, 2^63969189 is an apocalyptic number.

It is an amenable number.

63969189 is a deficient number, since it is larger than the sum of its proper divisors (23628411).

63969189 is a wasteful number, since it uses less digits than its factorization.

63969189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576339.

The product of its digits is 629856, while the sum is 51.

The square root of 63969189 is about 7998.0740806772. The cubic root of 63969189 is about 399.9358001132.

The spelling of 63969189 in words is "sixty-three million, nine hundred sixty-nine thousand, one hundred eighty-nine".