8223217956 has 24 divisors (see below), whose sum is σ = 21319454240. Its totient is φ = 2741072616.

The previous prime is 8223217939. The next prime is 8223217957. The reversal of 8223217956 is 6597123228.

It is not an unprimeable number, because it can be changed into a prime (8223217957) 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, 38070346 + ... + 38070561.

Almost surely, 2^8223217956 is an apocalyptic number.

It is an amenable number.

8223217956 is an abundant number, since it is smaller than the sum of its proper divisors (13096236284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8223217956 is a wasteful number, since it uses less digits than its factorization.

8223217956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76140920 (or 76140912 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 8223217956 is about 90681.9604772636. The cubic root of 8223217956 is about 2018.4311214505.

The spelling of 8223217956 in words is "eight billion, two hundred twenty-three million, two hundred seventeen thousand, nine hundred fifty-six".