8223947 has 4 divisors (see below), whose sum is σ = 8235360. Its totient is φ = 8212536.

The previous prime is 8223899. The next prime is 8223967. The reversal of 8223947 is 7493228.

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 8223947 - 2⁶ = 8223883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8223967) 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, 4547 + ... + 6092.

It is an arithmetic number, because the mean of its divisors is an integer number (2058840).

Almost surely, 2^8223947 is an apocalyptic number.

8223947 is a deficient number, since it is larger than the sum of its proper divisors (11413).

8223947 is a wasteful number, since it uses less digits than its factorization.

8223947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11412.

The product of its digits is 24192, while the sum is 35.

The square root of 8223947 is about 2867.7424919264. The cubic root of 8223947 is about 201.8490768887.

The spelling of 8223947 in words is "eight million, two hundred twenty-three thousand, nine hundred forty-seven".