8397447 has 4 divisors (see below), whose sum is σ = 11196600. Its totient is φ = 5598296.

The previous prime is 8397437. The next prime is 8397457. The reversal of 8397447 is 7447938.

8397447 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.

It is an interprime number because it is at equal distance from previous prime (8397437) and next prime (8397457).

It is a cyclic number.

It is not a de Polignac number, because 8397447 - 2¹² = 8393351 is a prime.

It is a super-2 number, since 2×8397447² = 141034232235618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8397399 and 8397408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8397437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399572 + ... + 1399577.

It is an arithmetic number, because the mean of its divisors is an integer number (2799150).

Almost surely, 2^8397447 is an apocalyptic number.

8397447 is a deficient number, since it is larger than the sum of its proper divisors (2799153).

8397447 is a wasteful number, since it uses less digits than its factorization.

8397447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799152.

The product of its digits is 169344, while the sum is 42.

The square root of 8397447 is about 2897.8348814244. The cubic root of 8397447 is about 203.2586751501.

The spelling of 8397447 in words is "eight million, three hundred ninety-seven thousand, four hundred forty-seven".