6409447 has 4 divisors (see below), whose sum is σ = 6992136. Its totient is φ = 5826760.

The previous prime is 6409409. The next prime is 6409471. The reversal of 6409447 is 7449046.

6409447 is digitally balanced in base 3, 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 is a cyclic number.

It is not a de Polignac number, because 6409447 - 2¹⁵ = 6376679 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6409747) 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 3 ways as a sum of consecutive naturals, for example, 291328 + ... + 291349.

It is an arithmetic number, because the mean of its divisors is an integer number (1748034).

Almost surely, 2^6409447 is an apocalyptic number.

6409447 is a deficient number, since it is larger than the sum of its proper divisors (582689).

6409447 is a wasteful number, since it uses less digits than its factorization.

6409447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582688.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 6409447 is about 2531.6885669450. The cubic root of 6409447 is about 185.7548607034.

The spelling of 6409447 in words is "six million, four hundred nine thousand, four hundred forty-seven".