4447649 has 2 divisors, whose sum is σ = 4447650. Its totient is φ = 4447648.

The previous prime is 4447637. The next prime is 4447679. The reversal of 4447649 is 9467444.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3775249 + 672400 = 1943^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 4447649 - 2¹² = 4443553 is a prime.

It is not a weakly prime, because it can be changed into another prime (4447609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2223824 + 2223825.

It is an arithmetic number, because the mean of its divisors is an integer number (2223825).

Almost surely, 2^4447649 is an apocalyptic number.

It is an amenable number.

4447649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4447649 is an equidigital number, since it uses as much as digits as its factorization.

4447649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 38.

The square root of 4447649 is about 2108.9449969120. The cubic root of 4447649 is about 164.4536443633.

The spelling of 4447649 in words is "four million, four hundred forty-seven thousand, six hundred forty-nine".