13944942389 has 12 divisors (see below), whose sum is σ = 16926958944. Its totient is φ = 11433119544.

The previous prime is 13944942377. The next prime is 13944942397. The reversal of 13944942389 is 98324944931.

It is a de Polignac number, because none of the positive numbers 2^k-13944942389 is a prime.

It is a super-2 number, since 2×13944942389² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13944912389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6185627 + ... + 6187880.

It is an arithmetic number, because the mean of its divisors is an integer number (1410579912).

Almost surely, 2^13944942389 is an apocalyptic number.

It is an amenable number.

13944942389 is a deficient number, since it is larger than the sum of its proper divisors (2982016555).

13944942389 is a wasteful number, since it uses less digits than its factorization.

13944942389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12373544 (or 12373537 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 56.

The spelling of 13944942389 in words is "thirteen billion, nine hundred forty-four million, nine hundred forty-two thousand, three hundred eighty-nine".