8378447 has 16 divisors (see below), whose sum is σ = 10513152. Its totient is φ = 6486720.

The previous prime is 8378437. The next prime is 8378479. The reversal of 8378447 is 7448738.

It is not a de Polignac number, because 8378447 - 2⁴ = 8378431 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 (8378407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17708 + ... + 18174.

It is an arithmetic number, because the mean of its divisors is an integer number (657072).

Almost surely, 2^8378447 is an apocalyptic number.

8378447 is a deficient number, since it is larger than the sum of its proper divisors (2134705).

8378447 is a wasteful number, since it uses less digits than its factorization.

8378447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its digits is 150528, while the sum is 41.

The square root of 8378447 is about 2894.5547153232. The cubic root of 8378447 is about 203.1052622084.

The spelling of 8378447 in words is "eight million, three hundred seventy-eight thousand, four hundred forty-seven".