13944354420 has 24 divisors (see below), whose sum is σ = 39044192544. Its totient is φ = 3718494496.

The previous prime is 13944354409. The next prime is 13944354421. The reversal of 13944354420 is 2445344931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13944354421) 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, 116202894 + ... + 116203013.

It is an arithmetic number, because the mean of its divisors is an integer number (1626841356).

Almost surely, 2^13944354420 is an apocalyptic number.

13944354420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13944354420 is an abundant number, since it is smaller than the sum of its proper divisors (25099838124).

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

13944354420 is a wasteful number, since it uses less digits than its factorization.

13944354420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232405919 (or 232405917 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 13944354420 in words is "thirteen billion, nine hundred forty-four million, three hundred fifty-four thousand, four hundred twenty".