8305210993 has 2 divisors, whose sum is σ = 8305210994. Its totient is φ = 8305210992.

The previous prime is 8305210937. The next prime is 8305210997. The reversal of 8305210993 is 3990125038.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8231388529 + 73822464 = 90727^2 + 8592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8305210993 is a prime.

It is a super-4 number, since 4×8305210993⁴ (a number of 41 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (8305210997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4152605496 + 4152605497.

It is an arithmetic number, because the mean of its divisors is an integer number (4152605497).

Almost surely, 2^8305210993 is an apocalyptic number.

It is an amenable number.

8305210993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8305210993 is an equidigital number, since it uses as much as digits as its factorization.

8305210993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 8305210993 is about 91132.9303435372. The cubic root of 8305210993 is about 2025.1174848669.

The spelling of 8305210993 in words is "eight billion, three hundred five million, two hundred ten thousand, nine hundred ninety-three".