123648889 has 8 divisors (see below), whose sum is σ = 152183360. Its totient is φ = 97832016.

The previous prime is 123648881. The next prime is 123648901. The reversal of 123648889 is 988846321.

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

It is a cyclic number.

It is not a de Polignac number, because 123648889 - 2³ = 123648881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123648881) 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 in 7 ways as a sum of consecutive naturals, for example, 679299 + ... + 679480.

It is an arithmetic number, because the mean of its divisors is an integer number (19022920).

Almost surely, 2^123648889 is an apocalyptic number.

It is an amenable number.

123648889 is a deficient number, since it is larger than the sum of its proper divisors (28534471).

123648889 is a wasteful number, since it uses less digits than its factorization.

123648889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358799.

The product of its digits is 663552, while the sum is 49.

The square root of 123648889 is about 11119.7522004764. The cubic root of 123648889 is about 498.1919887375.

The spelling of 123648889 in words is "one hundred twenty-three million, six hundred forty-eight thousand, eight hundred eighty-nine".