13906989943 has 8 divisors (see below), whose sum is σ = 17338584960. Its totient is φ = 10836615480.

The previous prime is 13906989937. The next prime is 13906990001. The reversal of 13906989943 is 34998960931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13906989943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13906989443) 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 7 ways as a sum of consecutive naturals, for example, 90305053 + ... + 90305206.

It is an arithmetic number, because the mean of its divisors is an integer number (2167323120).

Almost surely, 2^13906989943 is an apocalyptic number.

13906989943 is a deficient number, since it is larger than the sum of its proper divisors (3431595017).

13906989943 is a wasteful number, since it uses less digits than its factorization.

13906989943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180610277.

The product of its (nonzero) digits is 11337408, while the sum is 61.

The spelling of 13906989943 in words is "thirteen billion, nine hundred six million, nine hundred eighty-nine thousand, nine hundred forty-three".