8223997 has 2 divisors, whose sum is σ = 8223998. Its totient is φ = 8223996.

The previous prime is 8223991. The next prime is 8224031. The reversal of 8223997 is 7993228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6497401 + 1726596 = 2549^2 + 1314^2 .

It is a cyclic number.

It is not a de Polignac number, because 8223997 - 2³ = 8223989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8223991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4111998 + 4111999.

It is an arithmetic number, because the mean of its divisors is an integer number (4111999).

Almost surely, 2^8223997 is an apocalyptic number.

It is an amenable number.

8223997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8223997 is an equidigital number, since it uses as much as digits as its factorization.

8223997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 8223997 is about 2867.7512095717. The cubic root of 8223997 is about 201.8494859556.

The spelling of 8223997 in words is "eight million, two hundred twenty-three thousand, nine hundred ninety-seven".