2447289 has 18 divisors (see below), whose sum is σ = 3830190. Its totient is φ = 1505088.

The previous prime is 2447279. The next prime is 2447293. The reversal of 2447289 is 9827442.

It can be written as a sum of positive squares in 3 ways, for example, as 242064 + 2205225 = 492^2 + 1485^2 .

It is not a de Polignac number, because 2447289 - 2⁷ = 2447161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2447209) 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 17 ways as a sum of consecutive naturals, for example, 717 + ... + 2325.

2^2447289 is an apocalyptic number.

It is an amenable number.

2447289 is a deficient number, since it is larger than the sum of its proper divisors (1382901).

2447289 is a wasteful number, since it uses less digits than its factorization.

2447289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641 (or 1625 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 2447289 is about 1564.3813473703. The cubic root of 2447289 is about 134.7602328492.

The spelling of 2447289 in words is "two million, four hundred forty-seven thousand, two hundred eighty-nine".