63989123 has 8 divisors (see below), whose sum is σ = 69866496. Its totient is φ = 58121800.

The previous prime is 63989089. The next prime is 63989129. The reversal of 63989123 is 32198936.

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

It is not a de Polignac number, because 63989123 - 2²⁰ = 62940547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63989129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18458 + ... + 21648.

It is an arithmetic number, because the mean of its divisors is an integer number (8733312).

Almost surely, 2^63989123 is an apocalyptic number.

63989123 is a deficient number, since it is larger than the sum of its proper divisors (5877373).

63989123 is a wasteful number, since it uses less digits than its factorization.

63989123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025.

The product of its digits is 69984, while the sum is 41.

The square root of 63989123 is about 7999.3201586135. The cubic root of 63989123 is about 399.9773382995.

The spelling of 63989123 in words is "sixty-three million, nine hundred eighty-nine thousand, one hundred twenty-three".