12939892 has 48 divisors (see below), whose sum is σ = 27482112. Its totient is φ = 5211360.

The previous prime is 12939889. The next prime is 12939919. The reversal of 12939892 is 29893921.

12939892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45583 + ... + 45865.

It is an arithmetic number, because the mean of its divisors is an integer number (572544).

Almost surely, 2^12939892 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 12939892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13741056).

12939892 is an abundant number, since it is smaller than the sum of its proper divisors (14542220).

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

12939892 is a wasteful number, since it uses less digits than its factorization.

12939892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 386 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 12939892 is about 3597.2061381022. The cubic root of 12939892 is about 234.7705138617.

It can be divided in two parts, 12939 and 892, that added together give a palindrome (13831).

The spelling of 12939892 in words is "twelve million, nine hundred thirty-nine thousand, eight hundred ninety-two".