6408947 has 4 divisors (see below), whose sum is σ = 6746280. Its totient is φ = 6071616.

The previous prime is 6408931. The next prime is 6408953. The reversal of 6408947 is 7498046.

It is a happy number.

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 6408947 - 2⁴ = 6408931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6408947.

It is not an unprimeable number, because it can be changed into a prime (6408907) 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, 168638 + ... + 168675.

It is an arithmetic number, because the mean of its divisors is an integer number (1686570).

Almost surely, 2^6408947 is an apocalyptic number.

6408947 is a deficient number, since it is larger than the sum of its proper divisors (337333).

6408947 is a wasteful number, since it uses less digits than its factorization.

6408947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337332.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 6408947 is about 2531.5898166962. The cubic root of 6408947 is about 185.7500303415.

The spelling of 6408947 in words is "six million, four hundred eight thousand, nine hundred forty-seven".