13999608 has 128 divisors (see below), whose sum is σ = 45619200. Its totient is φ = 3894912.

The previous prime is 13999603. The next prime is 13999621. The reversal of 13999608 is 80699931.

13999608 is a `hidden beast` number, since 1 + 39 + 9 + 9 + 608 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13999603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70966 + ... + 71162.

It is an arithmetic number, because the mean of its divisors is an integer number (356400).

Almost surely, 2^13999608 is an apocalyptic number.

13999608 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 13999608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22809600).

13999608 is an abundant number, since it is smaller than the sum of its proper divisors (31619592).

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

13999608 is a wasteful number, since it uses less digits than its factorization.

13999608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 13999608 is about 3741.6050032038. The cubic root of 13999608 is about 241.0119769304.

The spelling of 13999608 in words is "thirteen million, nine hundred ninety-nine thousand, six hundred eight".