8398647 has 10 divisors (see below), whose sum is σ = 12546248. Its totient is φ = 5599044.

The previous prime is 8398633. The next prime is 8398673. The reversal of 8398647 is 7468938.

It is a happy number.

It is not a de Polignac number, because 8398647 - 2¹¹ = 8396599 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8398147) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 51763 + ... + 51924.

Almost surely, 2^8398647 is an apocalyptic number.

8398647 is a deficient number, since it is larger than the sum of its proper divisors (4147601).

8398647 is a wasteful number, since it uses less digits than its factorization.

8398647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103699 (or 103690 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 8398647 is about 2898.0419251626. The cubic root of 8398647 is about 203.2683566161.

It can be divided in two parts, 8398 and 647, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 8398647 in words is "eight million, three hundred ninety-eight thousand, six hundred forty-seven".