4047447 has 4 divisors (see below), whose sum is σ = 5396600. Its totient is φ = 2698296.

The previous prime is 4047431. The next prime is 4047469. The reversal of 4047447 is 7447404.

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

It is not a de Polignac number, because 4047447 - 2⁴ = 4047431 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4047487) 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, 674572 + ... + 674577.

It is an arithmetic number, because the mean of its divisors is an integer number (1349150).

Almost surely, 2^4047447 is an apocalyptic number.

4047447 is a deficient number, since it is larger than the sum of its proper divisors (1349153).

4047447 is a wasteful number, since it uses less digits than its factorization.

4047447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349152.

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 4047447 is about 2011.8267818080. The cubic root of 4047447 is about 159.3652849134.

The spelling of 4047447 in words is "four million, forty-seven thousand, four hundred forty-seven".