13939212 has 96 divisors (see below), whose sum is σ = 39481344. Its totient is φ = 3744000.

The previous prime is 13939193. The next prime is 13939223. The reversal of 13939212 is 21293931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13939212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137962 + ... + 138062.

It is an arithmetic number, because the mean of its divisors is an integer number (411264).

Almost surely, 2^13939212 is an apocalyptic number.

13939212 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 13939212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19740672).

13939212 is an abundant number, since it is smaller than the sum of its proper divisors (25542132).

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

13939212 is a wasteful number, since it uses less digits than its factorization.

13939212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 197 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 13939212 is about 3733.5254117255. The cubic root of 13939212 is about 240.6648924021.

The spelling of 13939212 in words is "thirteen million, nine hundred thirty-nine thousand, two hundred twelve".