13897912227839 has 4 divisors (see below), whose sum is σ = 13897922637456. Its totient is φ = 13897901818224.

The previous prime is 13897912227833. The next prime is 13897912227919. The reversal of 13897912227839 is 93872221979831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13897912227839 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 (13897912227833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2845739 + ... + 5991164.

It is an arithmetic number, because the mean of its divisors is an integer number (3474480659364).

Almost surely, 2^{13897912227839} is an apocalyptic number.

13897912227839 is a deficient number, since it is larger than the sum of its proper divisors (10409617).

13897912227839 is an equidigital number, since it uses as much as digits as its factorization.

13897912227839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10409616.

The product of its digits is 164602368, while the sum is 71.

The spelling of 13897912227839 in words is "thirteen trillion, eight hundred ninety-seven billion, nine hundred twelve million, two hundred twenty-seven thousand, eight hundred thirty-nine".