123668489 has 16 divisors (see below), whose sum is σ = 150460416. Its totient is φ = 99225600.

The previous prime is 123668483. The next prime is 123668507. The reversal of 123668489 is 984866321.

It is not a de Polignac number, because 123668489 - 2¹⁶ = 123602953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123668483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20009 + ... + 25449.

It is an arithmetic number, because the mean of its divisors is an integer number (9403776).

Almost surely, 2^123668489 is an apocalyptic number.

It is an amenable number.

123668489 is a deficient number, since it is larger than the sum of its proper divisors (26791927).

123668489 is a wasteful number, since it uses less digits than its factorization.

123668489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656.

The product of its digits is 497664, while the sum is 47.

The square root of 123668489 is about 11120.6334801575. The cubic root of 123668489 is about 498.2183107076.

The spelling of 123668489 in words is "one hundred twenty-three million, six hundred sixty-eight thousand, four hundred eighty-nine".