8449217 has 6 divisors (see below), whose sum is σ = 9828738. Its totient is φ = 7242144.

The previous prime is 8449159. The next prime is 8449223. The reversal of 8449217 is 7129448.

It can be written as a sum of positive squares in only one way, i.e., 7529536 + 919681 = 2744^2 + 959^2 .

It is not a de Polignac number, because 8449217 - 2¹⁸ = 8187073 is a prime.

It is a d-powerful number, because it can be written as 8³ + 4² + 4⁵ + 9⁵ + 2²³ + 1 + 7 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8449277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86168 + ... + 86265.

It is an arithmetic number, because the mean of its divisors is an integer number (1638123).

Almost surely, 2^8449217 is an apocalyptic number.

It is an amenable number.

8449217 is a deficient number, since it is larger than the sum of its proper divisors (1379521).

8449217 is a wasteful number, since it uses less digits than its factorization.

8449217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172447 (or 172440 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 8449217 is about 2906.7536875353. The cubic root of 8449217 is about 203.6755141937.

The spelling of 8449217 in words is "eight million, four hundred forty-nine thousand, two hundred seventeen".