8223147 has 8 divisors (see below), whose sum is σ = 12182480. Its totient is φ = 5482080.

The previous prime is 8223133. The next prime is 8223157. The reversal of 8223147 is 7413228.

It is not a de Polignac number, because 8223147 - 2¹² = 8219051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 304561 = 8223147 / (8 + 2 + 2 + 3 + 1 + 4 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8223147.

It is not an unprimeable number, because it can be changed into a prime (8223107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152254 + ... + 152307.

It is an arithmetic number, because the mean of its divisors is an integer number (1522810).

Almost surely, 2^8223147 is an apocalyptic number.

8223147 is a deficient number, since it is larger than the sum of its proper divisors (3959333).

8223147 is a wasteful number, since it uses less digits than its factorization.

8223147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304570 (or 304564 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 8223147 is about 2867.6030059965. The cubic root of 8223147 is about 201.8425315929.

It can be divided in two parts, 822 and 3147, that added together give a square (3969 = 63²).

The spelling of 8223147 in words is "eight million, two hundred twenty-three thousand, one hundred forty-seven".