8998283221 has 2 divisors, whose sum is σ = 8998283222. Its totient is φ = 8998283220.

The previous prime is 8998283137. The next prime is 8998283227. The reversal of 8998283221 is 1223828998.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5027519025 + 3970764196 = 70905^2 + 63014^2 .

It is a cyclic number.

It is not a de Polignac number, because 8998283221 - 2¹³ = 8998275029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8998283227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4499141610 + 4499141611.

It is an arithmetic number, because the mean of its divisors is an integer number (4499141611).

Almost surely, 2^8998283221 is an apocalyptic number.

It is an amenable number.

8998283221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8998283221 is an equidigital number, since it uses as much as digits as its factorization.

8998283221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 52.

The square root of 8998283221 is about 94859.2811537174. The cubic root of 8998283221 is about 2079.9515537440.

The spelling of 8998283221 in words is "eight billion, nine hundred ninety-eight million, two hundred eighty-three thousand, two hundred twenty-one".