13699063849 has 3 divisors (see below), whose sum is σ = 13699180893. Its totient is φ = 13698946806.

The previous prime is 13699063843. The next prime is 13699063871. The reversal of 13699063849 is 94836099631.

The square root of 13699063849 is 117043.

It is a perfect power (a square), and thus also a powerful number.

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 not a de Polignac number, because 13699063849 - 2³ = 13699063841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13699063793 and 13699063802.

It is not an unprimeable number, because it can be changed into a prime (13699063841) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 58522 + ... + 175564.

It is an arithmetic number, because the mean of its divisors is an integer number (4566393631).

Almost surely, 2^13699063849 is an apocalyptic number.

13699063849 is the 117043-rd square number.

13699063849 is the 58522-nd centered octagonal number.

It is an amenable number.

13699063849 is a deficient number, since it is larger than the sum of its proper divisors (117044).

13699063849 is an frugal number, since it uses more digits than its factorization.

13699063849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234086 (or 117043 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 58.

The spelling of 13699063849 in words is "thirteen billion, six hundred ninety-nine million, sixty-three thousand, eight hundred forty-nine".