13897197 has 8 divisors (see below), whose sum is σ = 20588480. Its totient is φ = 9264780.

The previous prime is 13897187. The next prime is 13897223. The reversal of 13897197 is 79179831.

It is not a de Polignac number, because 13897197 - 2⁴ = 13897181 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 (13897187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257329 + ... + 257382.

It is an arithmetic number, because the mean of its divisors is an integer number (2573560).

Almost surely, 2^13897197 is an apocalyptic number.

It is an amenable number.

13897197 is a deficient number, since it is larger than the sum of its proper divisors (6691283).

13897197 is an equidigital number, since it uses as much as digits as its factorization.

13897197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514720 (or 514714 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 13897197 is about 3727.8944459306. The cubic root of 13897197 is about 240.4228483096.

The spelling of 13897197 in words is "thirteen million, eight hundred ninety-seven thousand, one hundred ninety-seven".