8144447 has 4 divisors (see below), whose sum is σ = 8425320. Its totient is φ = 7863576.

The previous prime is 8144443. The next prime is 8144449. The reversal of 8144447 is 7444418.

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 8144447 - 2² = 8144443 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 (8144441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140393 + ... + 140450.

It is an arithmetic number, because the mean of its divisors is an integer number (2106330).

Almost surely, 2^8144447 is an apocalyptic number.

8144447 is a deficient number, since it is larger than the sum of its proper divisors (280873).

8144447 is a wasteful number, since it uses less digits than its factorization.

8144447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280872.

The product of its digits is 14336, while the sum is 32.

The square root of 8144447 is about 2853.8477534725. The cubic root of 8144447 is about 201.1965520398.

The spelling of 8144447 in words is "eight million, one hundred forty-four thousand, four hundred forty-seven".