13971396 has 48 divisors (see below), whose sum is σ = 34320384. Its totient is φ = 4415136.

The previous prime is 13971389. The next prime is 13971407. The reversal of 13971396 is 69317931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61435 + ... + 61661.

It is an arithmetic number, because the mean of its divisors is an integer number (715008).

Almost surely, 2^13971396 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 13971396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17160192).

13971396 is an abundant number, since it is smaller than the sum of its proper divisors (20348988).

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

13971396 is a wasteful number, since it uses less digits than its factorization.

13971396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 478 counting only the distinct ones).

The product of its digits is 30618, while the sum is 39.

The square root of 13971396 is about 3737.8330620829. The cubic root of 13971396 is about 240.8499723368.

The spelling of 13971396 in words is "thirteen million, nine hundred seventy-one thousand, three hundred ninety-six".