123959808 has 300 divisors, whose sum is σ = 437449122. Its totient is φ = 34836480.

The previous prime is 123959791. The next prime is 123959809. The reversal of 123959808 is 808959321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 122943744 + 1016064 = 11088^2 + 1008^2 .

It is not an unprimeable number, because it can be changed into a prime (123959809) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2032098 + ... + 2032158.

Almost surely, 2^123959808 is an apocalyptic number.

123959808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123959808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218724561).

123959808 is an abundant number, since it is smaller than the sum of its proper divisors (313489314).

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

123959808 is an frugal number, since it uses more digits than its factorization.

123959808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 123959808 is about 11133.7239053248. The cubic root of 123959808 is about 498.6092123396.

The spelling of 123959808 in words is "one hundred twenty-three million, nine hundred fifty-nine thousand, eight hundred eight".