123889086 has 48 divisors (see below), whose sum is σ = 286101504. Its totient is φ = 38654352.

The previous prime is 123889069. The next prime is 123889141. The reversal of 123889086 is 680988321.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16275 + ... + 22641.

It is an arithmetic number, because the mean of its divisors is an integer number (5960448).

Almost surely, 2^123889086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123889086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143050752).

123889086 is an abundant number, since it is smaller than the sum of its proper divisors (162212418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123889086 is a wasteful number, since it uses less digits than its factorization.

123889086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6445 (or 6442 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 123889086 is about 11130.5474258906. The cubic root of 123889086 is about 498.5143715213.

The spelling of 123889086 in words is "one hundred twenty-three million, eight hundred eighty-nine thousand, eighty-six".