13199912 has 32 divisors (see below), whose sum is σ = 27453600. Its totient is φ = 5899200.

The previous prime is 13199899. The next prime is 13199917. The reversal of 13199912 is 21999131.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13199917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4139 + ... + 6597.

It is an arithmetic number, because the mean of its divisors is an integer number (857925).

Almost surely, 2^13199912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13199912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13726800).

13199912 is an abundant number, since it is smaller than the sum of its proper divisors (14253688).

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

13199912 is a wasteful number, since it uses less digits than its factorization.

13199912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537 (or 2533 counting only the distinct ones).

The product of its digits is 4374, while the sum is 35.

The square root of 13199912 is about 3633.1683142954. The cubic root of 13199912 is about 236.3326249076.

It can be divided in two parts, 1 and 3199912, that added together give a palindrome (3199913).

The spelling of 13199912 in words is "thirteen million, one hundred ninety-nine thousand, nine hundred twelve".