13899912 has 96 divisors (see below), whose sum is σ = 39528000. Its totient is φ = 4063488.

The previous prime is 13899881. The next prime is 13899917. The reversal of 13899912 is 21999831.

It is not an unprimeable number, because it can be changed into a prime (13899917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93214 + ... + 93362.

It is an arithmetic number, because the mean of its divisors is an integer number (411750).

Almost surely, 2^13899912 is an apocalyptic number.

13899912 is a gapful number since it is divisible by the number (12) 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 13899912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19764000).

13899912 is an abundant number, since it is smaller than the sum of its proper divisors (25628088).

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

13899912 is a wasteful number, since it uses less digits than its factorization.

13899912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 190 counting only the distinct ones).

The product of its digits is 34992, while the sum is 42.

The square root of 13899912 is about 3728.2585747236. The cubic root of 13899912 is about 240.4385038774.

The spelling of 13899912 in words is "thirteen million, eight hundred ninety-nine thousand, nine hundred twelve".