13699897 has 4 divisors (see below), whose sum is σ = 13865040. Its totient is φ = 13534756.

The previous prime is 13699853. The next prime is 13699921. The reversal of 13699897 is 79899631.

13699897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13699897 - 2¹⁹ = 13175609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13699997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82447 + ... + 82612.

It is an arithmetic number, because the mean of its divisors is an integer number (3466260).

Almost surely, 2^13699897 is an apocalyptic number.

It is an amenable number.

13699897 is a deficient number, since it is larger than the sum of its proper divisors (165143).

13699897 is an equidigital number, since it uses as much as digits as its factorization.

13699897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165142.

The product of its digits is 734832, while the sum is 52.

The square root of 13699897 is about 3701.3371908001. The cubic root of 13699897 is about 239.2796514137.

The spelling of 13699897 in words is "thirteen million, six hundred ninety-nine thousand, eight hundred ninety-seven".