8650948021 has 2 divisors, whose sum is σ = 8650948022. Its totient is φ = 8650948020.

The previous prime is 8650948013. The next prime is 8650948073. The reversal of 8650948021 is 1208490568.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5354580625 + 3296367396 = 73175^2 + 57414^2 .

It is a cyclic number.

It is not a de Polignac number, because 8650948021 - 2³ = 8650948013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8650948091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4325474010 + 4325474011.

It is an arithmetic number, because the mean of its divisors is an integer number (4325474011).

Almost surely, 2^8650948021 is an apocalyptic number.

It is an amenable number.

8650948021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8650948021 is an equidigital number, since it uses as much as digits as its factorization.

8650948021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 8650948021 is about 93010.4726415257. The cubic root of 8650948021 is about 2052.8374763302.

The spelling of 8650948021 in words is "eight billion, six hundred fifty million, nine hundred forty-eight thousand, twenty-one".