13047897 has 4 divisors (see below), whose sum is σ = 17397200. Its totient is φ = 8698596.

The previous prime is 13047893. The next prime is 13047917. The reversal of 13047897 is 79874031.

13047897 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 not a de Polignac number, because 13047897 - 2² = 13047893 is a prime.

It is a super-2 number, since 2×13047897² = 340495232245218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13047893) 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, 2174647 + ... + 2174652.

It is an arithmetic number, because the mean of its divisors is an integer number (4349300).

Almost surely, 2^13047897 is an apocalyptic number.

It is an amenable number.

13047897 is a deficient number, since it is larger than the sum of its proper divisors (4349303).

13047897 is an equidigital number, since it uses as much as digits as its factorization.

13047897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349302.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 13047897 is about 3612.1872875032. The cubic root of 13047897 is about 235.4218888896.

The spelling of 13047897 in words is "thirteen million, forty-seven thousand, eight hundred ninety-seven".