3447649 has 4 divisors (see below), whose sum is σ = 3531780. Its totient is φ = 3363520.

The previous prime is 3447643. The next prime is 3447673. The reversal of 3447649 is 9467443.

3447649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1014049 + 2433600 = 1007^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 3447649 - 2³ = 3447641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3447641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42004 + ... + 42085.

It is an arithmetic number, because the mean of its divisors is an integer number (882945).

Almost surely, 2^3447649 is an apocalyptic number.

It is an amenable number.

3447649 is a deficient number, since it is larger than the sum of its proper divisors (84131).

3447649 is an equidigital number, since it uses as much as digits as its factorization.

3447649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84130.

The product of its digits is 72576, while the sum is 37.

The square root of 3447649 is about 1856.7845863212. The cubic root of 3447649 is about 151.0686499827.

It can be divided in two parts, 3447 and 649, that added together give a 12-th power (4096 = 2¹²).

The spelling of 3447649 in words is "three million, four hundred forty-seven thousand, six hundred forty-nine".