8378747 has 4 divisors (see below), whose sum is σ = 9023280. Its totient is φ = 7734216.

The previous prime is 8378731. The next prime is 8378771. The reversal of 8378747 is 7478738.

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 8378747 - 2⁴ = 8378731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8378698 and 8378707.

It is not an unprimeable number, because it can be changed into a prime (8378707) 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, 322247 + ... + 322272.

It is an arithmetic number, because the mean of its divisors is an integer number (2255820).

Almost surely, 2^8378747 is an apocalyptic number.

8378747 is a deficient number, since it is larger than the sum of its proper divisors (644533).

8378747 is a wasteful number, since it uses less digits than its factorization.

8378747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644532.

The product of its digits is 263424, while the sum is 44.

The square root of 8378747 is about 2894.6065363016. The cubic root of 8378747 is about 203.1076863192.

Subtracting from 8378747 its reverse (7478738), we obtain a palindrome (900009).

The spelling of 8378747 in words is "eight million, three hundred seventy-eight thousand, seven hundred forty-seven".