8649471 has 4 divisors (see below), whose sum is σ = 11532632. Its totient is φ = 5766312.

The previous prime is 8649469. The next prime is 8649479. The reversal of 8649471 is 1749468.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8649471 - 2¹ = 8649469 is a prime.

It is a super-3 number, since 3×8649471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8649479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1441576 + ... + 1441581.

It is an arithmetic number, because the mean of its divisors is an integer number (2883158).

Almost surely, 2^8649471 is an apocalyptic number.

8649471 is a deficient number, since it is larger than the sum of its proper divisors (2883161).

8649471 is a wasteful number, since it uses less digits than its factorization.

8649471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883160.

The product of its digits is 48384, while the sum is 39.

The square root of 8649471 is about 2940.9982998975. The cubic root of 8649471 is about 205.2720639168.

The spelling of 8649471 in words is "eight million, six hundred forty-nine thousand, four hundred seventy-one".