8020993 has 2 divisors, whose sum is σ = 8020994. Its totient is φ = 8020992.

The previous prime is 8020981. The next prime is 8021003. The reversal of 8020993 is 3990208.

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., 7997584 + 23409 = 2828^2 + 153^2 .

It is a cyclic number.

It is not a de Polignac number, because 8020993 - 2¹³ = 8012801 is a prime.

8020993 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8020913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4010496 + 4010497.

It is an arithmetic number, because the mean of its divisors is an integer number (4010497).

Almost surely, 2^8020993 is an apocalyptic number.

It is an amenable number.

8020993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8020993 is an equidigital number, since it uses as much as digits as its factorization.

8020993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 8020993 is about 2832.1357665197. The cubic root of 8020993 is about 200.1747888664.

The spelling of 8020993 in words is "eight million, twenty thousand, nine hundred ninety-three".