8042447 has 4 divisors (see below), whose sum is σ = 9191376. Its totient is φ = 6893520.

The previous prime is 8042443. The next prime is 8042449. The reversal of 8042447 is 7442408.

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 8042447 - 2² = 8042443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8042443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574454 + ... + 574467.

It is an arithmetic number, because the mean of its divisors is an integer number (2297844).

Almost surely, 2^8042447 is an apocalyptic number.

8042447 is a deficient number, since it is larger than the sum of its proper divisors (1148929).

8042447 is a wasteful number, since it uses less digits than its factorization.

8042447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148928.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 8042447 is about 2835.9208381053. The cubic root of 8042447 is about 200.3531012307.

The spelling of 8042447 in words is "eight million, forty-two thousand, four hundred forty-seven".