2208447 has 6 divisors (see below), whose sum is σ = 3189992. Its totient is φ = 1472292.

The previous prime is 2208439. The next prime is 2208463. The reversal of 2208447 is 7448022.

It is not a de Polignac number, because 2208447 - 2³ = 2208439 is a prime.

It is a Duffinian number.

2208447 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2208447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122683 + ... + 122700.

2^2208447 is an apocalyptic number.

2208447 is a deficient number, since it is larger than the sum of its proper divisors (981545).

2208447 is a wasteful number, since it uses less digits than its factorization.

2208447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245389 (or 245386 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 2208447 is about 1486.0844525127. The cubic root of 2208447 is about 130.2253880992.

The spelling of 2208447 in words is "two million, two hundred eight thousand, four hundred forty-seven".