8645449 has 2 divisors, whose sum is σ = 8645450. Its totient is φ = 8645448.

The previous prime is 8645443. The next prime is 8645477. The reversal of 8645449 is 9445468.

8645449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8643600 + 1849 = 2940^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 8645449 - 2¹³ = 8637257 is a prime.

8645449 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8645443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4322724 + 4322725.

It is an arithmetic number, because the mean of its divisors is an integer number (4322725).

Almost surely, 2^8645449 is an apocalyptic number.

It is an amenable number.

8645449 is a deficient number, since it is larger than the sum of its proper divisors (1).

8645449 is an equidigital number, since it uses as much as digits as its factorization.

8645449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The square root of 8645449 is about 2940.3144389674. The cubic root of 8645449 is about 205.2402418458.

The spelling of 8645449 in words is "eight million, six hundred forty-five thousand, four hundred forty-nine".