8862221 has 2 divisors, whose sum is σ = 8862222. Its totient is φ = 8862220.

The previous prime is 8862181. The next prime is 8862229. The reversal of 8862221 is 1222688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6817321 + 2044900 = 2611^2 + 1430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8862221 is a prime.

It is a super-2 number, since 2×8862221² = 157077922105682, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8862229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4431110 + 4431111.

It is an arithmetic number, because the mean of its divisors is an integer number (4431111).

Almost surely, 2^8862221 is an apocalyptic number.

It is an amenable number.

8862221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8862221 is an equidigital number, since it uses as much as digits as its factorization.

8862221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 29.

The square root of 8862221 is about 2976.9482696211. The cubic root of 8862221 is about 206.9414678884.

The spelling of 8862221 in words is "eight million, eight hundred sixty-two thousand, two hundred twenty-one".